lcd driver added; fixed startup code;

38 files changed, 820 insertions, 287 deletions

diff --git a/fw/fe310/eos/Makefile b/fw/fe310/eos/Makefile
index ebba204..899fea3 100644
--- a/fw/fe310/eos/Makefile
+++ b/fw/fe310/eos/Makefile
@@ -4,7 +4,7 @@ CRYPTO_DIR = ../../../crypto
 
 CFLAGS += -I. -I../bsp/include -I../bsp/drivers -I$(CRYPTO_DIR)
 
-obj = trap_entry.o eos.o msgq.o event.o interrupt.o timer.o power.o i2s.o i2c.o uart.o spi.o spi_dev.o display.o sdcard.o sdc_crypto.o cam.o net.o wifi.o cell.o sock.o unicode.o
+obj = trap_entry.o eos.o msgq.o event.o interrupt.o timer.o power.o i2s.o i2c.o uart.o spi.o spi_dev.o lcd.o sdcard.o sdc_crypto.o cam.o net.o wifi.o cell.o sock.o unicode.o
 
 
 %.o: %.c %.h
diff --git a/fw/fe310/eos/board.h b/fw/fe310/eos/board.h
index 79465b0..62111a9 100644
--- a/fw/fe310/eos/board.h
+++ b/fw/fe310/eos/board.h
@@ -18,7 +18,7 @@
 #define NET_PIN_RTS             20
 #define NET_PIN_CTS             22
 
-#define DISP_PIN_CS             11
+#define LCD_PIN_CS              11
 
 #define EVE_PIN_INTR            23
 
@@ -42,6 +42,6 @@
 #define EVE_GPIO_DIR            0xf
 
 #define EVE_GPIO_CAM            0
-#define EVE_GPIO_DISP_EN        1
+#define EVE_GPIO_LCD_EN         1
 #define EVE_GPIO_GAIN_SEL       2
 #define EVE_GPIO_HAPT           3
diff --git a/fw/fe310/eos/display.c b/fw/fe310/eos/display.c
deleted file mode 100644
index bc181cb..0000000
--- a/fw/fe310/eos/display.c
+++ /dev/null
@@ -1,71 +0,0 @@
-#include <stdlib.h>
-#include <stdint.h>
-
-#include "encoding.h"
-#include "platform.h"
-
-#include "eos.h"
-
-#include "board.h"
-
-#include "i2s.h"
-#include "net.h"
-#include "spi_dev.h"
-#include "display.h"
-
-#define BIT_PUT(b, pin)     if (b) GPIO_REG(GPIO_OUTPUT_VAL) |= (1 << (pin)); else GPIO_REG(GPIO_OUTPUT_VAL) &= ~(1 << (pin));
-#define BIT_GET(pin)        ((GPIO_REG(GPIO_INPUT_VAL) & (1 << (pin))) >> (pin))
-
-int eos_disp_select(void) {
-    if (eos_i2s_running()) return EOS_ERR_BUSY;
-    if (eos_spi_dev() != EOS_SPI_DEV_NET) return EOS_ERR_BUSY;
-
-    eos_net_stop();
-    GPIO_REG(GPIO_IOF_EN) &= ~SPI_IOF_MASK;
-}
-
-void eos_disp_deselect(void) {
-    GPIO_REG(GPIO_OUTPUT_VAL) |= (1 << IOF_SPI1_MOSI);
-    GPIO_REG(GPIO_IOF_EN) |= SPI_IOF_MASK;
-    eos_net_start(0);
-}
-
-void eos_disp_cs_set(void) {
-    GPIO_REG(GPIO_OUTPUT_VAL) |= (1 << DISP_PIN_CS);
-}
-
-void eos_disp_cs_clear(void) {
-    GPIO_REG(GPIO_OUTPUT_VAL) &= ~(1 << DISP_PIN_CS);
-}
-
-void eos_disp_write(uint8_t dc, uint8_t data) {
-    int i;
-
-    BIT_PUT(dc, IOF_SPI1_MOSI);
-    // sleep
-    BIT_PUT(1, IOF_SPI1_SCK);
-    for (i=0; i<8; i++) {
-        // sleep
-        BIT_PUT(0, IOF_SPI1_SCK);
-        BIT_PUT(data & 0x80, IOF_SPI1_MOSI);
-        // sleep
-        BIT_PUT(1, IOF_SPI1_SCK);
-        data = data << 1;
-    }
-    // sleep
-    BIT_PUT(0, IOF_SPI1_SCK);
-}
-
-void eos_disp_read(uint8_t *data) {
-    int i;
-
-    *data = 0;
-    for (i=0; i<8; i++) {
-        // sleep
-        BIT_PUT(1, IOF_SPI1_SCK);
-        *data = *data << 1;
-        *data |= BIT_GET(IOF_SPI1_MISO);
-        // sleep
-        BIT_PUT(0, IOF_SPI1_SCK);
-    }
-}
diff --git a/fw/fe310/eos/display.h b/fw/fe310/eos/display.h
deleted file mode 100644
index 61effca..0000000
--- a/fw/fe310/eos/display.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <stdint.h>
-
-int eos_disp_select(void);
-void eos_disp_deselect(void);
-void eos_disp_cs_set(void);
-void eos_disp_cs_clear(void);
-void eos_disp_write(uint8_t dc, uint8_t data);
-void eos_disp_read(uint8_t *data);
\ No newline at end of file
diff --git a/fw/fe310/eos/eos.c b/fw/fe310/eos/eos.c
index 96fc298..0b6228b 100644
--- a/fw/fe310/eos/eos.c
+++ b/fw/fe310/eos/eos.c
@@ -9,6 +9,7 @@
 #include "uart.h"
 #include "spi.h"
 #include "spi_dev.h"
+#include "lcd.h"
 #include "sdcard.h"
 #include "net.h"
 #include "wifi.h"
@@ -22,28 +23,46 @@
 #include "eos.h"
 
 void eos_init(void) {
-    uint8_t wakeup_cause = eos_power_wakeup_cause();
+    uint8_t wakeup_cause = eos_power_wakeup_cause() | EOS_PWR_INIT;
     uint32_t touch_matrix[6] = {0xfa46,0xfffffcf6,0x422fe,0xffffff38,0x10002,0xf3cb0};
     int touch_calibrate = 0;
-    int rst = (wakeup_cause == EOS_PWR_WAKE_RST);
-
-    printf("WAKE:%d\n", wakeup_cause);
-
-    eos_evtq_init(wakeup_cause);
-    eos_intr_init(wakeup_cause);
-    eos_timer_init(wakeup_cause);
-    eos_i2s_init(wakeup_cause);
-    eos_i2c_init(wakeup_cause);
-    eos_uart_init(wakeup_cause);
-    eos_spi_init(wakeup_cause);
-    eos_spi_dev_init(wakeup_cause);
-    eos_sdc_init(wakeup_cause);
-    eos_net_init(wakeup_cause);
-    eos_power_init(wakeup_cause);
-    eos_bq25895_init(wakeup_cause);
-    int rv = eve_init(wakeup_cause, touch_calibrate, touch_matrix, EVE_GPIO_DIR);
-
-    printf("EVE INIT: %d\n", rv);
+    int rv;
+
+    printf("INIT:%d\n", wakeup_cause & ~EOS_PWR_INIT);
+
+    rv = eos_evtq_init(wakeup_cause);
+    if (rv) printf("EVTQ INIT ERR:%d\n", rv);
+    rv = eos_intr_init(wakeup_cause);
+    if (rv) printf("INTR INIT ERR:%d\n", rv);
+    rv = eos_timer_init(wakeup_cause);
+    if (rv) printf("TIMER INIT ERR:%d\n", rv);
+    rv = eos_i2s_init(wakeup_cause);
+    if (rv) printf("I2S INIT ERR:%d\n", rv);
+    rv = eos_i2c_init(wakeup_cause);
+    if (rv) printf("I2C INIT ERR:%d\n", rv);
+    rv = eos_uart_init(wakeup_cause);
+    if (rv) printf("UART INIT ERR:%d\n", rv);
+    rv = eos_spi_init(wakeup_cause);
+    if (rv) printf("SPI INIT ERR:%d\n", rv);
+    rv = eos_spi_dev_init(wakeup_cause);
+    if (rv) printf("SPI DEV INIT ERR:%d\n", rv);
+    rv = eos_sdc_init(wakeup_cause);
+    if (rv) printf("SDC INIT ERR:%d\n", rv);
+    rv = eos_net_init(wakeup_cause);
+    if (rv) printf("NET INIT ERR:%d\n", rv);
+    rv = eos_power_init(wakeup_cause);
+    if (rv) printf("POWER INIT ERR:%d\n", rv);
+    rv = eos_bq25895_init(wakeup_cause);
+    if (rv) printf("BQ25895 INIT ERR:%d\n", rv);
+
+    eos_spi_select(EOS_SPI_DEV_EVE);
+    rv = eve_init(wakeup_cause, touch_calibrate, touch_matrix, EVE_GPIO_DIR);
+    eos_spi_deselect();
+    if (rv) printf("EVE INIT ERR:%d\n", rv);
+
+    rv = eos_lcd_init(wakeup_cause);
+    if (rv) printf("LCD INIT ERR:%d\n", rv);
+
     if (touch_calibrate) {
         printf("TOUCH MATRIX:\n");
         printf("uint32_t touch_matrix[6] = {0x%x,0x%x,0x%x,0x%x,0x%x,0x%x}\n", touch_matrix[0], touch_matrix[1], touch_matrix[2], touch_matrix[3], touch_matrix[4], touch_matrix[5]);
@@ -52,6 +71,10 @@ void eos_init(void) {
 }
 
 void eos_start(uint8_t wakeup_cause) {
+    eos_spi_select(EOS_SPI_DEV_EVE);
+    eve_start(wakeup_cause);
+    eos_spi_deselect();
+
     eos_wifi_init();
     eos_cell_init();
     eos_sock_init();
diff --git a/fw/fe310/eos/eve/eve.c b/fw/fe310/eos/eve/eve.c
index 3447d6b..8cca34b 100644
--- a/fw/fe310/eos/eve/eve.c
+++ b/fw/fe310/eos/eve/eve.c
@@ -254,15 +254,23 @@ void eve_cmd_dl(uint32_t dl) {
 
 int eve_cmd_done(void) {
     uint16_t r = eve_read16(REG_CMD_READ);
+
     if (r == 0xfff) {
+        uint16_t ptr;
+
         cmd_offset = 0;
+        ptr = eve_read16(REG_COPRO_PATCH_PTR);
         eve_write8(REG_CPURESET, 1);
         eve_write16(REG_CMD_READ, 0);
         eve_write16(REG_CMD_WRITE, 0);
         eve_write16(REG_CMD_DL, 0);
         eve_write8(REG_CPURESET, 0);
-        return -1;
+        eve_write16(REG_COPRO_PATCH_PTR, ptr);
+        eve_write8(REG_PCLK, EVE_PCLK);
+
+        return EVE_ERR;
     }
+
     return (r == cmd_offset);
 }
 
@@ -270,8 +278,10 @@ int eve_cmd_exec(int w) {
     eve_write16(REG_CMD_WRITE, cmd_offset);
     if (w) {
         int r;
+
         do {
             r = eve_cmd_done();
+            if (r < 0) break;
         } while (!r);
         if (r < 0) return EVE_ERR;
     }
@@ -293,92 +303,17 @@ void eve_cmd_burst_end(void) {
     cmd_burst = 0;
 }
 
-int eve_gpio_get(int gpio) {
-    uint16_t reg = eve_read16(REG_GPIOX);
-    return !!(reg & (1 << gpio));
-}
-
-void eve_gpio_set(int gpio, int val) {
-    uint16_t reg = eve_read16(REG_GPIOX);
-    uint16_t reg_val = (1 << gpio);
-    if (val) {
-        reg |= reg_val;
-    } else {
-        reg &= ~reg_val;
-    }
-    eve_write16(REG_GPIOX, reg);
-}
-
-uint8_t eve_gpio_get_dir(void) {
-    uint16_t reg = eve_read16(REG_GPIOX_DIR);
-    return reg & 0x000f;
-}
-
-void eve_gpio_set_dir(uint8_t dir) {
-    uint16_t reg = eve_read16(REG_GPIOX_DIR);
-    reg &= 0xfff0;
-    reg |= dir & 0x0f;
-    eve_write16(REG_GPIOX_DIR, reg);
-}
-
-void eve_active(void) {
-    uint16_t gpiox;
-
-    eve_command(EVE_ACTIVE, 0);
-
-    if (power_state == EVE_PSTATE_SLEEP) {
-        eve_time_sleep(40);
-        eve_touch_active();
-    }
-
-    gpiox = eve_read16(REG_GPIOX) | 0x8000;
-    eve_write16(REG_GPIOX, gpiox);
-
-    power_state = EVE_PSTATE_ACTIVE;
-}
-
-void eve_standby(void) {
-    uint16_t gpiox;
-
-    if (power_state != EVE_PSTATE_ACTIVE) return;
-
-    gpiox = eve_read16(REG_GPIOX) & ~0x8000;
-    eve_write16(REG_GPIOX, gpiox);
-
-    eve_command(EVE_STANDBY, 0);
-
-    power_state = EVE_PSTATE_STANDBY;
-}
-
-void eve_sleep(void) {
-    uint16_t gpiox;
-
-    if (power_state != EVE_PSTATE_ACTIVE) return;
-
-    gpiox = eve_read16(REG_GPIOX) & ~0x8000;
-    eve_write16(REG_GPIOX, gpiox);
-
-    eve_touch_sleep();
-
-    eve_command(EVE_SLEEP, 0);
-
-    power_state = EVE_PSTATE_SLEEP;
-}
-
-void eve_brightness(uint8_t b) {
-    eve_write8(REG_PWM_DUTY, b);
-}
-
-static int _init(int touch_calibrate, uint32_t *touch_matrix, uint8_t gpio_dir) {
+static int _init(uint8_t gpio_dir) {
     uint8_t chipid = 0;
     uint8_t reset = 0x07;
     uint16_t timeout;
 
-    eve_command(EVE_CORERST, 0);
+    eve_command(EVE_CORERST, 0);        /* reset */
+
     eve_command(EVE_CLKEXT, 0);
     eve_command(EVE_CLKSEL, 0x46);      /* set clock to 72 MHz */
     eve_command(EVE_ACTIVE, 0);         /* start EVE */
-    eve_time_sleep(40);
+    eve_time_sleep(4);
 
     timeout = 0;
     while (chipid != 0x7c) {            /* if chipid is not 0x7c, continue to read it until it is, EVE needs a moment for it's power on self-test and configuration */
@@ -399,23 +334,23 @@ static int _init(int touch_calibrate, uint32_t *touch_matrix, uint8_t gpio_dir)
     eve_write32(REG_FREQUENCY, 72000000);   /* tell EVE that we changed the frequency from default to 72MHz for BT8xx */
 
     eve_write8(REG_PWM_DUTY, 0x00);
+    eve_write16(REG_GPIOX, 0x0000);
     eve_write16(REG_GPIOX_DIR, 0x8000 | (gpio_dir & 0x0f));
-    eve_write16(REG_GPIOX, 0x8000);
 
     /* initialize display */
     eve_write16(REG_HCYCLE,  EVE_HCYCLE);   /* total number of clocks per line, incl front/back porch */
     eve_write16(REG_HOFFSET, EVE_HOFFSET);  /* start of active line */
     eve_write16(REG_HSYNC0,  EVE_HSYNC0);   /* start of horizontal sync pulse */
     eve_write16(REG_HSYNC1,  EVE_HSYNC1);   /* end of horizontal sync pulse */
+    eve_write16(REG_HSIZE,   EVE_HSIZE);    /* active display width */
     eve_write16(REG_VCYCLE,  EVE_VCYCLE);   /* total number of lines per screen, including pre/post */
     eve_write16(REG_VOFFSET, EVE_VOFFSET);  /* start of active screen */
     eve_write16(REG_VSYNC0,  EVE_VSYNC0);   /* start of vertical sync pulse */
     eve_write16(REG_VSYNC1,  EVE_VSYNC1);   /* end of vertical sync pulse */
+    eve_write16(REG_VSIZE,   EVE_VSIZE);    /* active display height */
     eve_write8(REG_SWIZZLE,  EVE_SWIZZLE);  /* FT8xx output to LCD - pin order */
     eve_write8(REG_PCLK_POL, EVE_PCLKPOL);  /* LCD data is clocked in on this PCLK edge */
     eve_write8(REG_CSPREAD,  EVE_CSPREAD);  /* helps with noise, when set to 1 fewer signals are changed simultaneously, reset-default: 1 */
-    eve_write16(REG_HSIZE,   EVE_HSIZE);    /* active display width */
-    eve_write16(REG_VSIZE,   EVE_VSIZE);    /* active display height */
 
     /* do not set PCLK yet - wait for just after the first display list */
 
@@ -431,33 +366,115 @@ static int _init(int touch_calibrate, uint32_t *touch_matrix, uint8_t gpio_dir)
     eve_dl_write(DISPLAY());
     eve_dl_swap();
 
-    /* nothing is being displayed yet... the pixel clock is still 0x00 */
-    eve_write16(REG_GPIOX, 0x8000);         /* enable the DISP signal to the LCD panel, it is set to output in REG_GPIOX_DIR by default */
-    eve_write8(REG_PCLK, EVE_PCLK);         /* now start clocking data to the LCD panel */
-
-    eve_cmd(CMD_SETROTATE, "w", 2);
+#ifdef EVE_PCLK_FREQ
+    eve_cmd(CMD_PCLKFREQ, "www", EVE_PCLK_FREQ, 0, 0);
     eve_cmd_exec(1);
+#endif
+    /* nothing is being displayed yet... the pixel clock is still 0x00 */
 
     return EVE_OK;
 }
 
 int eve_init(uint8_t wakeup_cause, int touch_calibrate, uint32_t *touch_matrix, uint8_t gpio_dir) {
-    int rst = (wakeup_cause == EOS_PWR_WAKE_RST);
-
-    eve_spi_start();
+    int rst = (wakeup_cause == EVE_INIT_RST);
 
     if (rst) {
-        int rv = _init(touch_calibrate, touch_matrix, gpio_dir);
+        int rv = _init(gpio_dir);
         if (rv) return rv;
     } else {
-        power_state = EVE_PSTATE_SLEEP;
-        eve_active();
+        eve_command(EVE_ACTIVE, 0);
+        eve_time_sleep(40);
     }
 
     eve_touch_init(wakeup_cause, touch_calibrate, touch_matrix);
     eve_platform_init();
 
-    eve_spi_stop();
-
     return EVE_OK;
 }
+
+void eve_start(uint8_t wakeup_cause) {
+    uint16_t gpiox;
+
+    gpiox = eve_read16(REG_GPIOX) | 0x8000;
+    eve_write16(REG_GPIOX, gpiox);          /* enable the DISP signal to the LCD panel, it is set to output in REG_GPIOX_DIR by default */
+    eve_write8(REG_PCLK, EVE_PCLK);         /* now start clocking data to the LCD panel */
+
+    eve_touch_start(wakeup_cause);
+}
+
+void eve_stop(void) {
+    uint16_t gpiox;
+
+    eve_touch_stop();
+
+    gpiox = eve_read16(REG_GPIOX) & ~0x8000;
+    eve_write16(REG_GPIOX, gpiox);
+    eve_write8(REG_PCLK, 0);
+}
+
+int eve_gpio_get(int gpio) {
+    uint16_t reg = eve_read16(REG_GPIOX);
+    return !!(reg & (1 << gpio));
+}
+
+void eve_gpio_set(int gpio, int val) {
+    uint16_t reg = eve_read16(REG_GPIOX);
+    uint16_t reg_val = (1 << gpio);
+    if (val) {
+        reg |= reg_val;
+    } else {
+        reg &= ~reg_val;
+    }
+    eve_write16(REG_GPIOX, reg);
+}
+
+uint8_t eve_gpio_get_dir(void) {
+    uint16_t reg = eve_read16(REG_GPIOX_DIR);
+    return reg & 0x000f;
+}
+
+void eve_gpio_set_dir(uint8_t dir) {
+    uint16_t reg = eve_read16(REG_GPIOX_DIR);
+    reg &= 0xfff0;
+    reg |= dir & 0x0f;
+    eve_write16(REG_GPIOX_DIR, reg);
+}
+
+void eve_standby(void) {
+    uint16_t gpiox;
+
+    if (power_state != EVE_PSTATE_ACTIVE) return;
+
+    eve_command(EVE_STANDBY, 0);
+
+    power_state = EVE_PSTATE_STANDBY;
+}
+
+void eve_sleep(void) {
+    uint16_t gpiox;
+
+    if (power_state != EVE_PSTATE_ACTIVE) return;
+
+    eve_stop();
+
+    eve_command(EVE_SLEEP, 0);
+
+    power_state = EVE_PSTATE_SLEEP;
+}
+
+void eve_active(void) {
+    uint16_t gpiox;
+
+    eve_command(EVE_ACTIVE, 0);
+
+    if (power_state == EVE_PSTATE_SLEEP) {
+        eve_time_sleep(40);
+        eve_start(0);
+    }
+
+    power_state = EVE_PSTATE_ACTIVE;
+}
+
+void eve_brightness(uint8_t b) {
+    eve_write8(REG_PWM_DUTY, b);
+}
diff --git a/fw/fe310/eos/eve/eve.h b/fw/fe310/eos/eve/eve.h
index 11d59cd..363905c 100644
--- a/fw/fe310/eos/eve/eve.h
+++ b/fw/fe310/eos/eve/eve.h
@@ -56,15 +56,16 @@ int eve_cmd_exec(int w);
 void eve_cmd_burst_start(void);
 void eve_cmd_burst_end(void);
 
+int eve_init(uint8_t wakeup_cause, int touch_calibrate, uint32_t *touch_matrix, uint8_t gpio_dir);
+void eve_start(uint8_t wakeup_cause);
+void eve_stop(void);
+
 int eve_gpio_get(int gpio);
 void eve_gpio_set(int gpio, int val);
 uint8_t eve_gpio_get_dir(void);
 void eve_gpio_set_dir(uint8_t dir);
 
-void eve_active(void);
 void eve_standby(void);
 void eve_sleep(void);
-void eve_wake(void);
+void eve_active(void);
 void eve_brightness(uint8_t b);
-
-int eve_init(uint8_t wakeup_cause, int touch_calibrate, uint32_t *touch_matrix, uint8_t gpio_dir);
diff --git a/fw/fe310/eos/eve/eve_config.h b/fw/fe310/eos/eve/eve_config.h
index b0dd1a4..b151c63 100755
--- a/fw/fe310/eos/eve/eve_config.h
+++ b/fw/fe310/eos/eve/eve_config.h
@@ -1,37 +1,38 @@
 #ifndef EVE_CONFIG_H_
 #define EVE_CONFIG_H_
 
-/* my display */
-
-#define EVE_TH      1200L
-#define EVE_THD     800L
-#define EVE_THF     210L
-#define EVE_THP     20L
-#define EVE_THB     46L
-
-#define EVE_TV      650L
-#define EVE_TVD     480L
-#define EVE_TVF     22L
-#define EVE_TVP     12L
-#define EVE_TVB     23L
-
-
-#define EVE_HSIZE           (EVE_THD)                       /* Thd Length of visible part of line (in PCLKs) - display width */
-#define EVE_HSYNC0          (EVE_THF)                       /* Thf Horizontal Front Porch */
-#define EVE_HSYNC1          (EVE_THF + EVE_THP)             /* Thf + Thp Horizontal Front Porch plus Hsync Pulse width */
-#define EVE_HOFFSET         (EVE_THF + EVE_THP + EVE_THB)   /* Thf + Thp + Thb Length of non-visible part of line (in PCLK cycles) */
-#define EVE_HCYCLE          (EVE_TH)                        /* Th Total length of line (visible and non-visible) (in PCLKs) */
-
-#define EVE_VSIZE           (EVE_TVD)                       /* Tvd Number of visible lines (in lines) - display height */
-#define EVE_VSYNC0          (EVE_TVF)                       /* Tvf Vertical Front Porch */
-#define EVE_VSYNC1          (EVE_TVF + EVE_TVP)             /* Tvf + Tvp Vertical Front Porch plus Vsync Pulse width */
-#define EVE_VOFFSET         (EVE_TVF + EVE_TVP + EVE_TVB)   /* Tvf + Tvp + Tvb Number of non-visible lines (in lines) */
-#define EVE_VCYCLE          (EVE_TV)                        /* Tv Total number of lines (visible and non-visible) (in lines) */
-
-#define EVE_PCLKPOL         (1L)                            /* PCLK polarity (0 = rising edge, 1 = falling edge) */
-#define EVE_SWIZZLE         (0L)                            /* Defines the arrangement of the RGB pins of the FT800 */
-#define EVE_PCLK            (1L)                            /* 60MHz / REG_PCLK = PCLK frequency - 30 MHz */
-#define EVE_CSPREAD         (0L)                            /* helps with noise, when set to 1 fewer signals are changed simultaneously, reset-default: 1 */
+/* FocusLCDs E50RG84885LWAM520-CA */
+
+#define EVE_HLPW    20      /* horizontal low pulse width */
+#define EVE_HBP     60      /* horizontal back porch */
+#define EVE_HFP     40      /* horizontal front porch */
+#define EVE_HACT    480     /* horizontal active pixels */
+#define EVE_HTOT    (EVE_HLPW + EVE_HBP + EVE_HFP + EVE_HACT + 10)
+
+
+#define EVE_VLPW    26      /* vertical low pulse width */
+#define EVE_VBP     50      /* vertical back porch */
+#define EVE_VFP     30      /* vertical front porch */
+#define EVE_VACT    854     /* vertical active pixels */
+#define EVE_VTOT    (EVE_VLPW + EVE_VBP + EVE_VFP + EVE_VACT + 10)
+
+#define EVE_HCYCLE          (EVE_HTOT)                      /* Th Total length of line (visible and non-visible) (in PCLKs) */
+#define EVE_HSIZE           (EVE_HACT)                      /* Length of visible part of line (in PCLKs) - display width */
+#define EVE_HOFFSET         (EVE_HFP + EVE_HLPW + EVE_HBP)  /* Length of non-visible part of line (in PCLK cycles) */
+#define EVE_HSYNC0          (EVE_HFP)                       /* Horizontal Front Porch */
+#define EVE_HSYNC1          (EVE_HFP + EVE_HLPW)            /* Horizontal Front Porch plus Hsync Pulse width */
+
+#define EVE_VCYCLE          (EVE_VTOT)                      /* Total number of lines (visible and non-visible) (in lines) */
+#define EVE_VSIZE           (EVE_VACT)                      /* Number of visible lines (in lines) - display height */
+#define EVE_VOFFSET         (EVE_VFP + EVE_VLPW + EVE_VBP)  /* Number of non-visible lines (in lines) */
+#define EVE_VSYNC0          (EVE_VFP)                       /* Vertical Front Porch */
+#define EVE_VSYNC1          (EVE_VFP + EVE_VLPW)            /* Vertical Front Porch plus Vsync Pulse width */
+
+#define EVE_PCLKPOL         1                               /* PCLK polarity (0 = rising edge, 1 = falling edge) */
+#define EVE_SWIZZLE         0                               /* Defines the arrangement of the RGB pins */
+#define EVE_CSPREAD         0                               /* helps with noise, when set to 1 fewer signals are changed simultaneously, reset-default: 1 */
+
+#define EVE_PCLK            2                               /* 36 MHz */
 
 #define EVE_GEN             4
 
diff --git a/fw/fe310/eos/eve/eve_def.h b/fw/fe310/eos/eve/eve_def.h
index e607320..2f7e0b7 100755
--- a/fw/fe310/eos/eve/eve_def.h
+++ b/fw/fe310/eos/eve/eve_def.h
@@ -695,7 +695,7 @@ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR TH
 #define REG_FLASH_STATUS        0x3025f0UL

 #define REG_FLASH_SIZE          0x309024UL

 #define REG_PLAY_CONTROL        0x30914eUL

-#define REG_COPRO_PATCH_DTR     0x309162UL

+#define REG_COPRO_PATCH_PTR     0x309162UL

 

 

 /* BT81x graphics engine specific macros */

diff --git a/fw/fe310/eos/eve/eve_platform.h b/fw/fe310/eos/eve/eve_platform.h
index 83c1799..587e1cf 100644
--- a/fw/fe310/eos/eve/eve_platform.h
+++ b/fw/fe310/eos/eve/eve_platform.h
@@ -2,6 +2,7 @@
 
 #include "spi.h"
 #include "spi_dev.h"
+#include "power.h"
 #include "timer.h"
 
 #define EVE_ETYPE_INTR      1
@@ -11,6 +12,10 @@
 #define EVE_SPI_FLAG_BSWAP  EOS_SPI_FLAG_BSWAP
 #define EVE_SPI_FLAG_TX     EOS_SPI_FLAG_TX
 
+#define EVE_INIT_RST        EOS_INIT_RST
+#define EVE_INIT_RTC        EOS_INIT_RTC
+#define EVE_INIT_BTN        EOS_INIT_BTN
+
 void *eve_malloc(size_t);
 void eve_free(void *);
 
diff --git a/fw/fe310/eos/eve/eve_touch.c b/fw/fe310/eos/eve/eve_touch.c
index 035e122..fc9d040 100644
--- a/fw/fe310/eos/eve/eve_touch.c
+++ b/fw/fe310/eos/eve/eve_touch.c
@@ -300,28 +300,16 @@ void eve_handle_time(void) {
     }
 }
 
-void eve_touch_active(void) {
-    eve_write8(REG_TOUCH_MODE, EVE_TMODE_CONTINUOUS);
-}
-
-void eve_touch_sleep(void) {
-    eve_write8(REG_TOUCH_MODE, EVE_TMODE_OFF);
-}
-
 static void _init(int touch_calibrate, uint32_t *touch_matrix) {
     /* configure touch */
-    eve_write16(REG_TOUCH_CONFIG, 0x381);                   /* default */
-    eve_write8(REG_TOUCH_MODE, EVE_TMODE_CONTINUOUS);       /* enable touch */
+    eve_write8(REG_CPURESET, 2);                            /* touch engine reset */
+    eve_write16(REG_TOUCH_CONFIG, 0x4000);                  /* host mode multi touch */
+    eve_write8(REG_CPURESET, 0);                            /* clear reset */
 
     if (touch_calibrate) {
         eve_write8(REG_PWM_DUTY, 0x40);
-        eve_cmd_dl(CMD_DLSTART);
-        eve_cmd_dl(CLEAR_COLOR_RGB(0,0,0));
-        eve_cmd_dl(CLEAR(1,1,1));
         eve_cmd(CMD_TEXT, "hhhhs", EVE_HSIZE/2, EVE_VSIZE/2, 27, EVE_OPT_CENTER, "Please tap on the dot.");
         eve_cmd(CMD_CALIBRATE, "w", 0);
-        eve_cmd_dl(DISPLAY());
-        eve_cmd_dl(CMD_SWAP);
         eve_cmd_exec(1);
         eve_write8(REG_PWM_DUTY, 0);
 
@@ -340,7 +328,7 @@ static void _init(int touch_calibrate, uint32_t *touch_matrix) {
         eve_write32(REG_TOUCH_TRANSFORM_F, touch_matrix[5]);
     }
 
-    eve_write8(REG_CTOUCH_EXTENDED, 0x00);
+    eve_write8(REG_CTOUCH_EXTENDED, 0x00);                  /* set extended mode */
 
     /* configure interrupts */
     eve_write8(REG_INT_MASK, touch_intr_mask);
@@ -349,7 +337,7 @@ static void _init(int touch_calibrate, uint32_t *touch_matrix) {
 }
 
 void eve_touch_init(uint8_t wakeup_cause, int touch_calibrate, uint32_t *touch_matrix) {
-    int rst = (wakeup_cause == EOS_PWR_WAKE_RST);
+    int rst = (wakeup_cause == EVE_INIT_RST);
     int i;
 
     eve_vtrack_init();
@@ -362,6 +350,14 @@ void eve_touch_init(uint8_t wakeup_cause, int touch_calibrate, uint32_t *touch_m
     if (rst) _init(touch_calibrate, touch_matrix);
 }
 
+void eve_touch_start(uint8_t wakeup_cause) {
+    eve_write8(REG_TOUCH_MODE, EVE_TMODE_CONTINUOUS);
+}
+
+void eve_touch_stop(void) {
+    eve_write8(REG_TOUCH_MODE, EVE_TMODE_OFF);
+}
+
 void eve_touch_set_handler(eve_touch_handler_t handler, void *param) {
     touch_handler = handler;
     touch_handler_param = param;
diff --git a/fw/fe310/eos/eve/eve_touch.h b/fw/fe310/eos/eve/eve_touch.h
index 074d37a..b6ca6d9 100644
--- a/fw/fe310/eos/eve/eve_touch.h
+++ b/fw/fe310/eos/eve/eve_touch.h
@@ -101,9 +101,10 @@ typedef void (*eve_touch_handler_t) (EVETouch *, uint16_t, uint8_t, void *);
 void eve_handle_touch(void);
 void eve_handle_time(void);
 
-void eve_touch_active(void);
-void eve_touch_sleep(void);
 void eve_touch_init(uint8_t wakeup_cause, int touch_calibrate, uint32_t *touch_matrix);
+void eve_touch_start(uint8_t wakeup_cause);
+void eve_touch_stop(void);
+
 void eve_touch_set_handler(eve_touch_handler_t handler, void *handler_param);
 EVETouch *eve_touch_get(int i);
 int8_t eve_touch_get_idx(EVETouch *touch);
diff --git a/fw/fe310/eos/event.c b/fw/fe310/eos/event.c
index 1b08acc..4a6493f 100644
--- a/fw/fe310/eos/event.c
+++ b/fw/fe310/eos/event.c
@@ -6,6 +6,7 @@
 #include "encoding.h"
 #include "platform.h"
 
+#include "eos.h"
 #include "msgq.h"
 #include "event.h"
 
@@ -24,7 +25,7 @@ static void evtq_handler(unsigned char type, unsigned char *buffer, uint16_t len
     }
 }
 
-void eos_evtq_init(uint8_t wakeup_cause) {
+int eos_evtq_init(uint8_t wakeup_cause) {
     int i;
 
     evt_handler[0] = evtq_handler;
@@ -32,6 +33,8 @@ void eos_evtq_init(uint8_t wakeup_cause) {
         evt_handler[i + 1] = eos_evtq_bad_handler;
     }
     eos_msgq_init(&_eos_event_q, event_q_array, EOS_EVT_SIZE_Q);
+
+    return EOS_OK;
 }
 
 int eos_evtq_push(unsigned char type, unsigned char *buffer, uint16_t len) {
diff --git a/fw/fe310/eos/event.h b/fw/fe310/eos/event.h
index 02250a5..82043f4 100644
--- a/fw/fe310/eos/event.h
+++ b/fw/fe310/eos/event.h
@@ -4,7 +4,7 @@
 
 typedef void (*eos_evt_handler_t) (unsigned char, unsigned char *, uint16_t);
 
-void eos_evtq_init(uint8_t wakeup_cause);
+int eos_evtq_init(uint8_t wakeup_cause);
 int eos_evtq_push(unsigned char type, unsigned char *buffer, uint16_t len);
 int eos_evtq_push_isr(unsigned char type, unsigned char *buffer, uint16_t len);
 void eos_evtq_pop(unsigned char *type, unsigned char **buffer, uint16_t *len);
diff --git a/fw/fe310/eos/i2c.c b/fw/fe310/eos/i2c.c
index f296bc7..37c5cf8 100644
--- a/fw/fe310/eos/i2c.c
+++ b/fw/fe310/eos/i2c.c
@@ -9,8 +9,10 @@
 #include "i2s.h"
 #include "i2c.h"
 
-void eos_i2c_init(uint8_t wakeup_cause) {
+int eos_i2c_init(uint8_t wakeup_cause) {
     GPIO_REG(GPIO_IOF_SEL)      &= ~IOF0_I2C0_MASK;
+
+    return EOS_OK;
 }
 
 int eos_i2c_start(uint32_t baud_rate) {
diff --git a/fw/fe310/eos/i2c.h b/fw/fe310/eos/i2c.h
index 260e680..2da0517 100644
--- a/fw/fe310/eos/i2c.h
+++ b/fw/fe310/eos/i2c.h
@@ -1,6 +1,6 @@
 #include <stdint.h>
 
-void eos_i2c_init(uint8_t wakeup_cause);
+int eos_i2c_init(uint8_t wakeup_cause);
 int eos_i2c_start(uint32_t baud_rate);
 void eos_i2c_stop(void);
 void eos_i2c_set_baud_rate(uint32_t baud_rate);
diff --git a/fw/fe310/eos/i2c/bq25895.c b/fw/fe310/eos/i2c/bq25895.c
index db4a6ab..b619fe3 100644
--- a/fw/fe310/eos/i2c/bq25895.c
+++ b/fw/fe310/eos/i2c/bq25895.c
@@ -7,16 +7,13 @@
 #include "i2c.h"
 #include "i2c/bq25895.h"
 
-void eos_bq25895_init(uint8_t wakeup_cause) {
-    int rst = (wakeup_cause == EOS_PWR_WAKE_RST);
+int eos_bq25895_init(uint8_t wakeup_cause) {
+    int rst = (wakeup_cause == EOS_INIT_RST);
     int i, rv = EOS_OK;
     uint8_t data = 0;
 
     rv = eos_i2c_start(100000);
-    if (rv) {
-        printf("I2C BUSY\n");
-        return;
-    }
+    if (rv) return rv;
     if (rst) {
         rv = eos_i2c_write8(BQ25895_ADDR, 0x14, 0x80);  // reset
         if (rv) printf("I2C ERROR 0x14\n");
@@ -36,4 +33,6 @@ void eos_bq25895_init(uint8_t wakeup_cause) {
         if (!rv) printf("REG%02x: %02x\n", i, data);
     }
     eos_i2c_stop();
+
+    return EOS_OK;
 }
diff --git a/fw/fe310/eos/i2c/bq25895.h b/fw/fe310/eos/i2c/bq25895.h
index 39c6b68..cbef36e 100644
--- a/fw/fe310/eos/i2c/bq25895.h
+++ b/fw/fe310/eos/i2c/bq25895.h
@@ -2,4 +2,4 @@
 
 #define BQ25895_ADDR        0x6A
 
-void eos_bq25895_init(uint8_t wakeup_cause);
+int eos_bq25895_init(uint8_t wakeup_cause);
diff --git a/fw/fe310/eos/i2s.c b/fw/fe310/eos/i2s.c
index 0a2742b..5623add 100644
--- a/fw/fe310/eos/i2s.c
+++ b/fw/fe310/eos/i2s.c
@@ -137,7 +137,7 @@ static void _spk_vol_set(uint8_t vol) {
 
 extern void _eos_i2s_start_pwm(void);
 
-void eos_i2s_init(uint8_t wakeup_cause) {
+int eos_i2s_init(uint8_t wakeup_cause) {
     eos_evtq_set_handler(EOS_EVT_I2S, i2s_handle_evt);
 
     GPIO_REG(GPIO_OUTPUT_VAL)   |=  (1 << I2S_PIN_CK_SW);
@@ -180,6 +180,8 @@ void eos_i2s_init(uint8_t wakeup_cause) {
 
     GPIO_REG(GPIO_IOF_EN)       &= ~I2S_PIN_PWM;
     GPIO_REG(GPIO_IOF_SEL)      |=  I2S_PIN_PWM;
+
+    return EOS_OK;
 }
 
 void eos_i2s_start(uint32_t sample_rate, unsigned char fmt) {
diff --git a/fw/fe310/eos/i2s.h b/fw/fe310/eos/i2s.h
index 1339d0f..1cc10e0 100644
--- a/fw/fe310/eos/i2s.h
+++ b/fw/fe310/eos/i2s.h
@@ -11,7 +11,7 @@ typedef struct EOSABuf {
 
 typedef void (*eos_i2s_handler_t) (unsigned char);
 
-void eos_i2s_init(uint8_t wakeup_cause);
+int eos_i2s_init(uint8_t wakeup_cause);
 void eos_i2s_start(uint32_t sample_rate, unsigned char fmt);
 void eos_i2s_stop(void);
 int eos_i2s_running(void);
diff --git a/fw/fe310/eos/interrupt.c b/fw/fe310/eos/interrupt.c
index 5eeace8..8af492b 100644
--- a/fw/fe310/eos/interrupt.c
+++ b/fw/fe310/eos/interrupt.c
@@ -7,6 +7,7 @@
 #include "platform.h"
 #include "plic_driver.h"
 
+#include "eos.h"
 #include "interrupt.h"
 
 // Global Instance data for the PLIC
@@ -25,7 +26,7 @@ uintptr_t eos_intr_handle(uintptr_t int_num) {
     return int_num;
 }
 
-void eos_intr_init(uint8_t wakeup_cause) {
+int eos_intr_init(uint8_t wakeup_cause) {
     for (int i = 0; i < PLIC_NUM_INTERRUPTS; i++){
         ext_interrupt_handler[i] = NULL;
     }
@@ -43,6 +44,8 @@ void eos_intr_init(uint8_t wakeup_cause) {
 
     // Enable all interrupts
     set_csr(mstatus, MSTATUS_MIE);
+
+    return EOS_OK;
 }
 
 void eos_intr_set(uint8_t int_num, uint8_t priority, eos_intr_handler_t handler) {
diff --git a/fw/fe310/eos/interrupt.h b/fw/fe310/eos/interrupt.h
index 603f0e1..a239934 100644
--- a/fw/fe310/eos/interrupt.h
+++ b/fw/fe310/eos/interrupt.h
@@ -4,7 +4,7 @@
 
 typedef void (*eos_intr_handler_t) (void);
 
-void eos_intr_init(uint8_t wakeup_cause);
+int eos_intr_init(uint8_t wakeup_cause);
 void eos_intr_set(uint8_t int_num, uint8_t priority, eos_intr_handler_t handler);
 void eos_intr_set_handler(uint8_t int_num, eos_intr_handler_t handler);
 void eos_intr_set_priority(uint8_t int_num, uint8_t priority);
diff --git a/fw/fe310/eos/lcd.c b/fw/fe310/eos/lcd.c
new file mode 100644
index 0000000..8a77651
--- /dev/null
+++ b/fw/fe310/eos/lcd.c
@@ -0,0 +1,518 @@
+#include <stdlib.h>
+#include <stdint.h>
+
+#include "encoding.h"
+#include "platform.h"
+
+#include "eos.h"
+#include "power.h"
+#include "timer.h"
+#include "i2s.h"
+#include "net.h"
+#include "spi_dev.h"
+#include "eve/eve.h"
+
+#include "board.h"
+
+#include "lcd.h"
+
+#define BIT_PUT(b, pin)     if (b) GPIO_REG(GPIO_OUTPUT_VAL) |= (1 << (pin)); else GPIO_REG(GPIO_OUTPUT_VAL) &= ~(1 << (pin));
+#define BIT_GET(pin)        ((GPIO_REG(GPIO_INPUT_VAL) & (1 << (pin))) >> (pin))
+
+#define SCK_UP              { GPIO_REG(GPIO_OUTPUT_VAL) |= (1 << IOF_SPI1_SCK); }
+#define SCK_DN              { GPIO_REG(GPIO_OUTPUT_VAL) &= ~(1 << IOF_SPI1_SCK); }
+
+static inline void _sleep(int n) {
+    volatile int x = n;
+
+    while(x) x--;
+}
+
+int eos_lcd_select(void) {
+    if (eos_i2s_running()) return EOS_ERR_BUSY;
+    if (eos_spi_dev() != EOS_SPI_DEV_NET) return EOS_ERR_BUSY;
+
+    eos_net_stop();
+    GPIO_REG(GPIO_IOF_EN) &= ~SPI_IOF_MASK;
+
+    return EOS_OK;
+}
+
+void eos_lcd_deselect(void) {
+    GPIO_REG(GPIO_OUTPUT_VAL) |= (1 << IOF_SPI1_MOSI);
+    GPIO_REG(GPIO_IOF_EN) |= SPI_IOF_MASK;
+    eos_net_start(0);
+}
+
+void eos_lcd_cs_set(void) {
+    GPIO_REG(GPIO_OUTPUT_VAL) |= (1 << LCD_PIN_CS);
+}
+
+void eos_lcd_cs_clear(void) {
+    GPIO_REG(GPIO_OUTPUT_VAL) &= ~(1 << LCD_PIN_CS);
+}
+
+/* sck frequency for r/w operations is 0.8Mhz */
+void eos_lcd_write(uint8_t dc, uint8_t data) {
+    int i;
+
+    BIT_PUT(dc, IOF_SPI1_MOSI);
+    _sleep(10);
+    SCK_UP;
+    for (i=0; i<8; i++) {
+        _sleep(10);
+        SCK_DN;
+        BIT_PUT(data & 0x80, IOF_SPI1_MOSI);
+        _sleep(10);
+        SCK_UP;
+        data = data << 1;
+    }
+    _sleep(10);
+    SCK_DN;
+}
+
+void eos_lcd_read(uint8_t *data) {
+    int i;
+
+    *data = 0;
+    for (i=0; i<8; i++) {
+        _sleep(10);
+        *data = *data << 1;
+        *data |= BIT_GET(IOF_SPI1_MISO);
+        SCK_UP;
+        _sleep(10);
+        SCK_DN;
+    }
+}
+
+static int _init(void) {
+    int rv;
+
+    rv = eos_lcd_select();
+    if (rv) return rv;
+    eos_lcd_cs_set();
+
+    /* LCD Setting */
+    eos_lcd_write(0, 0xFF);    // change to Page 1 CMD
+    eos_lcd_write(1, 0xFF);
+    eos_lcd_write(1, 0x98);
+    eos_lcd_write(1, 0x06);
+    eos_lcd_write(1, 0x04);
+    eos_lcd_write(1, 0x01);
+
+    // eos_lcd_write(0, 0x08); //Output SDA
+    // eos_lcd_write(1, 0x10);
+
+    eos_lcd_write(0, 0x20);    // set DE/VSYNC mode
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x21);    // DE = 1 Active
+    eos_lcd_write(1, 0x01);
+
+    eos_lcd_write(0, 0x30);    // resolution setting 480 X 854
+    eos_lcd_write(1, 0x01);
+
+    eos_lcd_write(0, 0x31);    // inversion setting 2-dot
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x40);    // BT AVDD,AVDD
+    eos_lcd_write(1, 0x16);
+
+    eos_lcd_write(0, 0x41);
+    eos_lcd_write(1, 0x33);    // 22
+
+    eos_lcd_write(0, 0x42);
+    eos_lcd_write(1, 0x03);    // VGL=DDVDH+VCIP-DDVDL, VGH=2DDVDL-VCIP
+
+    eos_lcd_write(0, 0x43);
+    eos_lcd_write(1, 0x09);    // set VGH clamp level
+
+    eos_lcd_write(0, 0x44);
+    eos_lcd_write(1, 0x06);    // set VGL clamp level
+
+    eos_lcd_write(0, 0x50);    // VREG1
+    eos_lcd_write(1, 0x88);
+
+    eos_lcd_write(0, 0x51);    // VREG2
+    eos_lcd_write(1, 0x88);
+
+    eos_lcd_write(0, 0x52);    // flicker MSB
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x53);    // flicker LSB
+    eos_lcd_write(1, 0x49);    // VCOM
+
+    eos_lcd_write(0, 0x55);    // flicker
+    eos_lcd_write(1, 0x49);
+
+    eos_lcd_write(0, 0x60);
+    eos_lcd_write(1, 0x07);
+
+    eos_lcd_write(0, 0x61);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x62);
+    eos_lcd_write(1, 0x07);
+
+    eos_lcd_write(0, 0x63);
+    eos_lcd_write(1, 0x00);
+
+    /* Gamma Setting */
+    eos_lcd_write(0, 0xA0);    // positive Gamma
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0xA1);
+    eos_lcd_write(1, 0x09);
+
+    eos_lcd_write(0, 0xA2);
+    eos_lcd_write(1, 0x11);
+
+    eos_lcd_write(0, 0xA3);
+    eos_lcd_write(1, 0x0B);
+
+    eos_lcd_write(0, 0xA4);
+    eos_lcd_write(1, 0x05);
+
+    eos_lcd_write(0, 0xA5);
+    eos_lcd_write(1, 0x08);
+
+    eos_lcd_write(0, 0xA6);
+    eos_lcd_write(1, 0x06);
+
+    eos_lcd_write(0, 0xA7);
+    eos_lcd_write(1, 0x04);
+
+    eos_lcd_write(0, 0xA8);
+    eos_lcd_write(1, 0x09);
+
+    eos_lcd_write(0, 0xA9);
+    eos_lcd_write(1, 0x0C);
+
+    eos_lcd_write(0, 0xAA);
+    eos_lcd_write(1, 0x15);
+
+    eos_lcd_write(0, 0xAB);
+    eos_lcd_write(1, 0x08);
+
+    eos_lcd_write(0, 0xAC);
+    eos_lcd_write(1, 0x0F);
+
+    eos_lcd_write(0, 0xAD);
+    eos_lcd_write(1, 0x12);
+
+    eos_lcd_write(0, 0xAE);
+    eos_lcd_write(1, 0x09);
+
+    eos_lcd_write(0, 0xAF);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0xC0);    // negative Gamma
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0xC1);
+    eos_lcd_write(1, 0x09);
+
+    eos_lcd_write(0, 0xC2);
+    eos_lcd_write(1, 0x10);
+
+    eos_lcd_write(0, 0xC3);
+    eos_lcd_write(1, 0x0C);
+
+    eos_lcd_write(0, 0xC4);
+    eos_lcd_write(1, 0x05);
+
+    eos_lcd_write(0, 0xC5);
+    eos_lcd_write(1, 0x08);
+
+    eos_lcd_write(0, 0xC6);
+    eos_lcd_write(1, 0x06);
+
+    eos_lcd_write(0, 0xC7);
+    eos_lcd_write(1, 0x04);
+
+    eos_lcd_write(0, 0xC8);
+    eos_lcd_write(1, 0x08);
+
+    eos_lcd_write(0, 0xC9);
+    eos_lcd_write(1, 0x0C);
+
+    eos_lcd_write(0, 0xCA);
+    eos_lcd_write(1, 0x14);
+
+    eos_lcd_write(0, 0xCB);
+    eos_lcd_write(1, 0x08);
+
+    eos_lcd_write(0, 0xCC);
+    eos_lcd_write(1, 0x0F);
+
+    eos_lcd_write(0, 0xCD);
+    eos_lcd_write(1, 0x11);
+
+    eos_lcd_write(0, 0xCE);
+    eos_lcd_write(1, 0x09);
+
+    eos_lcd_write(0, 0xCF);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0xFF);    // change to Page 6 CMD for GIP timing
+    eos_lcd_write(1, 0xFF);
+    eos_lcd_write(1, 0x98);
+    eos_lcd_write(1, 0x06);
+    eos_lcd_write(1, 0x04);
+    eos_lcd_write(1, 0x06);
+
+    eos_lcd_write(0, 0x00);
+    eos_lcd_write(1, 0x20);
+
+    eos_lcd_write(0, 0x01);
+    eos_lcd_write(1, 0x0A);
+
+    eos_lcd_write(0, 0x02);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x03);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x04);
+    eos_lcd_write(1, 0x01);
+
+    eos_lcd_write(0, 0x05);
+    eos_lcd_write(1, 0x01);
+
+    eos_lcd_write(0, 0x06);
+    eos_lcd_write(1, 0x98);
+
+    eos_lcd_write(0, 0x07);
+    eos_lcd_write(1, 0x06);
+
+    eos_lcd_write(0, 0x08);
+    eos_lcd_write(1, 0x01);
+
+    eos_lcd_write(0, 0x09);
+    eos_lcd_write(1, 0x80);
+
+    eos_lcd_write(0, 0x0A);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x0B);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x0C);
+    eos_lcd_write(1, 0x01);
+
+    eos_lcd_write(0, 0x0D);
+    eos_lcd_write(1, 0x01);
+
+    eos_lcd_write(0, 0x0E);
+    eos_lcd_write(1, 0x05);
+
+    eos_lcd_write(0, 0x0F);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x10);
+    eos_lcd_write(1, 0xF0);
+
+    eos_lcd_write(0, 0x11);
+    eos_lcd_write(1, 0xF4);
+
+    eos_lcd_write(0, 0x12);
+    eos_lcd_write(1, 0x01);
+
+    eos_lcd_write(0, 0x13);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x14);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x15);
+    eos_lcd_write(1, 0xC0);
+
+    eos_lcd_write(0, 0x16);
+    eos_lcd_write(1, 0x08);
+
+    eos_lcd_write(0, 0x17);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x18);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x19);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x1A);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x1B);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x1C);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x1D);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x20);
+    eos_lcd_write(1, 0x01);
+
+    eos_lcd_write(0, 0x21);
+    eos_lcd_write(1, 0x23);
+
+    eos_lcd_write(0, 0x22);
+    eos_lcd_write(1, 0x45);
+
+    eos_lcd_write(0, 0x23);
+    eos_lcd_write(1, 0x67);
+
+    eos_lcd_write(0, 0x24);
+    eos_lcd_write(1, 0x01);
+
+    eos_lcd_write(0, 0x25);
+    eos_lcd_write(1, 0x23);
+
+    eos_lcd_write(0, 0x26);
+    eos_lcd_write(1, 0x45);
+
+    eos_lcd_write(0, 0x27);
+    eos_lcd_write(1, 0x67);
+
+    eos_lcd_write(0, 0x30);
+    eos_lcd_write(1, 0x11);
+
+    eos_lcd_write(0, 0x31);
+    eos_lcd_write(1, 0x11);
+
+    eos_lcd_write(0, 0x32);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x33);
+    eos_lcd_write(1, 0xEE);
+
+    eos_lcd_write(0, 0x34);
+    eos_lcd_write(1, 0xFF);
+
+    eos_lcd_write(0, 0x35);
+    eos_lcd_write(1, 0xBB);
+
+    eos_lcd_write(0, 0x36);
+    eos_lcd_write(1, 0xAA);
+
+    eos_lcd_write(0, 0x37);
+    eos_lcd_write(1, 0xDD);
+
+    eos_lcd_write(0, 0x38);
+    eos_lcd_write(1, 0xCC);
+
+    eos_lcd_write(0, 0x39);
+    eos_lcd_write(1, 0x66);
+
+    eos_lcd_write(0, 0x3A);
+    eos_lcd_write(1, 0x77);
+
+    eos_lcd_write(0, 0x3B);
+    eos_lcd_write(1, 0x22);
+
+    eos_lcd_write(0, 0x3C);
+    eos_lcd_write(1, 0x22);
+
+    eos_lcd_write(0, 0x3D);
+    eos_lcd_write(1, 0x22);
+
+    eos_lcd_write(0, 0x3E);
+    eos_lcd_write(1, 0x22);
+
+    eos_lcd_write(0, 0x3F);
+    eos_lcd_write(1, 0x22);
+
+    eos_lcd_write(0, 0x40);
+    eos_lcd_write(1, 0x22);
+
+    eos_lcd_write(0, 0xFF);    // change to Page 7 CMD for GIP timing
+    eos_lcd_write(1, 0xFF);
+    eos_lcd_write(1, 0x98);
+    eos_lcd_write(1, 0x06);
+    eos_lcd_write(1, 0x04);
+    eos_lcd_write(1, 0x07);
+
+    eos_lcd_write(0, 0x17);
+    eos_lcd_write(1, 0x22);
+
+    eos_lcd_write(0, 0x02);
+    eos_lcd_write(1, 0x77);
+
+    eos_lcd_write(0, 0x26);
+    eos_lcd_write(1, 0xB2);
+
+    eos_lcd_write(0, 0xFF);    // change to Page 0 CMD for normal command
+    eos_lcd_write(1, 0xFF);
+    eos_lcd_write(1, 0x98);
+    eos_lcd_write(1, 0x06);
+    eos_lcd_write(1, 0x04);
+    eos_lcd_write(1, 0x00);
+
+    eos_lcd_write(0, 0x3A);
+    eos_lcd_write(1, 0x70);    // 24BIT
+
+    eos_lcd_write(0, 0x11);
+    eos_time_sleep(120);
+    eos_lcd_write(0, 0x29);
+    eos_time_sleep(25);
+
+    eos_lcd_cs_clear();
+    eos_lcd_deselect();
+
+    return EOS_OK;
+}
+
+int eos_lcd_init(uint8_t wakeup_cause) {
+    eos_spi_select(EOS_SPI_DEV_EVE);
+    eve_gpio_set(EVE_GPIO_LCD_EN, 1);
+    eos_spi_deselect();
+    eos_time_sleep(200);
+
+    return _init();
+}
+
+int eos_lcd_sleep(void) {
+    int rv;
+
+    rv = eos_lcd_select();
+    if (rv) return rv;
+
+    eos_lcd_cs_set();
+
+    eos_lcd_write(0, 0x28);
+    eos_time_sleep(10);
+    eos_lcd_write(0, 0x10);
+
+    eos_lcd_cs_clear();
+    eos_lcd_deselect();
+
+    eos_spi_select(EOS_SPI_DEV_EVE);
+    eve_gpio_set(EVE_GPIO_LCD_EN, 0);
+    eos_spi_deselect();
+
+    return EOS_OK;
+}
+
+int eos_lcd_wake(void) {
+    int rv;
+
+    eos_spi_select(EOS_SPI_DEV_EVE);
+    eve_gpio_set(EVE_GPIO_LCD_EN, 1);
+    eos_spi_deselect();
+    eos_time_sleep(200);
+
+    rv = eos_lcd_select();
+    if (rv) return rv;
+
+    eos_lcd_cs_set();
+
+    eos_lcd_write(0, 0x11);
+    eos_time_sleep(120);
+    eos_lcd_write(0, 0x29);
+
+    eos_lcd_cs_clear();
+    eos_lcd_deselect();
+
+    return EOS_OK;
+}
diff --git a/fw/fe310/eos/lcd.h b/fw/fe310/eos/lcd.h
new file mode 100644
index 0000000..1bcb2cd
--- /dev/null
+++ b/fw/fe310/eos/lcd.h
@@ -0,0 +1,12 @@
+#include <stdint.h>
+
+int eos_lcd_init(uint8_t wakeup_cause);
+int eos_lcd_select(void);
+void eos_lcd_deselect(void);
+void eos_lcd_cs_set(void);
+void eos_lcd_cs_clear(void);
+void eos_lcd_write(uint8_t dc, uint8_t data);
+void eos_lcd_read(uint8_t *data);
+
+int eos_lcd_sleep(void);
+int eos_lcd_wake(void);
\ No newline at end of file
diff --git a/fw/fe310/eos/net.c b/fw/fe310/eos/net.c
index 5caac38..dffbc31 100644
--- a/fw/fe310/eos/net.c
+++ b/fw/fe310/eos/net.c
@@ -305,7 +305,7 @@ static void net_resume(void) {
     }
 }
 
-void eos_net_init(uint8_t wakeup_cause) {
+int eos_net_init(uint8_t wakeup_cause) {
     int i;
 
     eos_msgq_init(&net_send_q, net_sndq_array, EOS_NET_SIZE_BUFQ);
@@ -342,6 +342,8 @@ void eos_net_init(uint8_t wakeup_cause) {
     if (GPIO_REG(GPIO_INPUT_VAL) & (1 << NET_PIN_CTS)) net_state_flags |= NET_STATE_FLAG_CTS;
     if (GPIO_REG(GPIO_INPUT_VAL) & (1 << NET_PIN_RTS)) net_state_flags |= NET_STATE_FLAG_RTS;
     set_csr(mstatus, MSTATUS_MIE);
+
+    return EOS_OK;
 }
 
 void eos_net_start(uint8_t wakeup_cause) {
@@ -350,8 +352,8 @@ void eos_net_start(uint8_t wakeup_cause) {
     SPI1_REG(SPI_REG_CSID) = eos_spi_csid(EOS_SPI_DEV_NET);
 
     clear_csr(mstatus, MSTATUS_MIE);
-    if (wakeup_cause) {
-        if (wakeup_cause != EOS_PWR_WAKE_BTN) {
+    if ((wakeup_cause & EOS_PWR_INIT) && (wakeup_cause != EOS_INIT_RST)) {
+        if (wakeup_cause != EOS_INIT_BTN) {
             net_xchg_wake();
         }
         if (!(net_state_flags & NET_STATE_FLAG_CTS)) {
diff --git a/fw/fe310/eos/net.h b/fw/fe310/eos/net.h
index c26706e..6cb4cf0 100644
--- a/fw/fe310/eos/net.h
+++ b/fw/fe310/eos/net.h
@@ -22,7 +22,7 @@
 /* fe310 specific */
 #define EOS_NET_SIZE_BUFQ           2
 
-void eos_net_init(uint8_t wakeup_cause);
+int eos_net_init(uint8_t wakeup_cause);
 void eos_net_start(uint8_t wakeup_cause);
 void eos_net_stop(void);
 int eos_net_sleep(uint32_t timeout);
diff --git a/fw/fe310/eos/power.c b/fw/fe310/eos/power.c
index 539749b..0d6ab0c 100644
--- a/fw/fe310/eos/power.c
+++ b/fw/fe310/eos/power.c
@@ -10,6 +10,7 @@
 #include "spi.h"
 #include "spi_dev.h"
 #include "net.h"
+#include "lcd.h"
 #include "eve/eve.h"
 
 #include "power.h"
@@ -49,7 +50,7 @@ static void power_handle_btn(unsigned char type, unsigned char *buffer, uint16_t
     eos_power_sleep();
 }
 
-void eos_power_init(uint8_t wakeup_cause) {
+int eos_power_init(uint8_t wakeup_cause) {
     int i;
 
     for (i=0; i<EOS_PWR_MAX_MTYPE; i++) {
@@ -65,6 +66,8 @@ void eos_power_init(uint8_t wakeup_cause) {
     AON_REG(AON_RTCCFG) = PWR_RTC_SCALE;
     AON_REG(AON_RTCHI) = 0;
     AON_REG(AON_RTCLO) = 0;
+
+    return EOS_OK;
 }
 
 uint8_t eos_power_wakeup_cause(void) {
@@ -75,14 +78,23 @@ uint8_t eos_power_reset_cause(void) {
     return (AON_REG(AON_PMUCAUSE) >> 8) & 0xff;
 }
 
-void eos_power_sleep(void) {
+int eos_power_sleep(void) {
+    int rv;
+
+    rv = eos_lcd_sleep();
+    if (rv) return rv;
+
     eos_spi_select(EOS_SPI_DEV_EVE);
     eve_sleep();
     eos_spi_deselect();
-    eos_net_sleep(1000);
+
+    rv = eos_net_sleep(1000);
+    if (rv) return rv;
 
     AON_REG(AON_PMUKEY) = 0x51F15E;
     AON_REG(AON_PMUSLEEP) = 1;
+
+    return EOS_OK;
 }
 
 void eos_power_wake_at(uint32_t msec) {
diff --git a/fw/fe310/eos/power.h b/fw/fe310/eos/power.h
index 9f6729c..241ee07 100644
--- a/fw/fe310/eos/power.h
+++ b/fw/fe310/eos/power.h
@@ -8,15 +8,20 @@
 #define EOS_PWR_WAKE_RST        0
 #define EOS_PWR_WAKE_RTC        1
 #define EOS_PWR_WAKE_BTN        2
+#define EOS_PWR_INIT            0x80
 
 #define EOS_PWR_RST_PWRON       0
 #define EOS_PWR_RST_EXT         1
 #define EOS_PWR_RST_WDOG        2
 
-void eos_power_init(uint8_t wakeup_cause);
+#define EOS_INIT_RST            (EOS_PWR_WAKE_RST | EOS_PWR_INIT)
+#define EOS_INIT_RTC            (EOS_PWR_WAKE_RTC | EOS_PWR_INIT)
+#define EOS_INIT_BTN            (EOS_PWR_WAKE_BTN | EOS_PWR_INIT)
+
+int eos_power_init(uint8_t wakeup_cause);
 uint8_t eos_power_wakeup_cause(void);
 uint8_t eos_power_reset_cause(void);
-void eos_power_sleep(void);
+int eos_power_sleep(void);
 void eos_power_wake_at(uint32_t msec);
 void eos_power_wake_disable(void);
 void eos_power_set_handler(unsigned char mtype, eos_evt_handler_t handler);
diff --git a/fw/fe310/eos/sdcard.c b/fw/fe310/eos/sdcard.c
index 82b679b..6f5488d 100644
--- a/fw/fe310/eos/sdcard.c
+++ b/fw/fe310/eos/sdcard.c
@@ -352,7 +352,7 @@ static int sdc_init(uint32_t timeout) {
     return EOS_OK;
 }
 
-void eos_sdc_init(uint8_t wakeup_cause) {
+int eos_sdc_init(uint8_t wakeup_cause) {
     int rv;
 
     eos_spi_select(EOS_SPI_DEV_SDC);
@@ -363,6 +363,8 @@ void eos_sdc_init(uint8_t wakeup_cause) {
         printf("SDC OK:%x\n", sdc_type);
     }
     eos_spi_deselect();
+
+    return EOS_OK;
 }
 
 uint8_t eos_sdc_type(void) {
diff --git a/fw/fe310/eos/sdcard.h b/fw/fe310/eos/sdcard.h
index 1204508..910a6e0 100644
--- a/fw/fe310/eos/sdcard.h
+++ b/fw/fe310/eos/sdcard.h
@@ -11,7 +11,7 @@
 #define EOS_SDC_CAP_ERASE_EN        0x20
 #define EOS_SDC_CAP_MASK            0xf0
 
-void eos_sdc_init(uint8_t wakeup_cause);
+int eos_sdc_init(uint8_t wakeup_cause);
 uint8_t eos_sdc_type(void);
 uint8_t eos_sdc_cap(void);
 int eos_sdc_get_sect_count(uint32_t timeout, uint32_t *sectors);
diff --git a/fw/fe310/eos/spi.c b/fw/fe310/eos/spi.c
index 234bff6..a4b164e 100644
--- a/fw/fe310/eos/spi.c
+++ b/fw/fe310/eos/spi.c
@@ -45,7 +45,7 @@ static void spi_handle_evt(unsigned char type, unsigned char *buffer, uint16_t l
     }
 }
 
-void eos_spi_init(uint8_t wakeup_cause) {
+int eos_spi_init(uint8_t wakeup_cause) {
     int i;
 
     for (i=0; i<EOS_SPI_MAX_EVT; i++) {
@@ -83,6 +83,7 @@ void eos_spi_init(uint8_t wakeup_cause) {
 
     // There is no way here to change the CS polarity.
     // SPI1_REG(SPI_REG_CSDEF) = 0xFFFF;
+    return EOS_OK;
 }
 
 void eos_spi_start(uint16_t div, uint8_t csid, uint8_t cspin, unsigned char evt) {
diff --git a/fw/fe310/eos/spi.h b/fw/fe310/eos/spi.h
index 816f6e6..a23a235 100644
--- a/fw/fe310/eos/spi.h
+++ b/fw/fe310/eos/spi.h
@@ -10,7 +10,7 @@
 
 #define EOS_SPI_MAX_EVT         2
 
-void eos_spi_init(uint8_t wakeup_cause);
+int eos_spi_init(uint8_t wakeup_cause);
 void eos_spi_start(uint16_t div, uint8_t csid, uint8_t cspin, unsigned char evt);
 void eos_spi_stop(void);
 void eos_spi_set_handler(unsigned char evt, eos_evt_handler_t handler);
diff --git a/fw/fe310/eos/spi_dev.c b/fw/fe310/eos/spi_dev.c
index 09a4a83..b060bad 100644
--- a/fw/fe310/eos/spi_dev.c
+++ b/fw/fe310/eos/spi_dev.c
@@ -21,7 +21,7 @@ static uint8_t spi_dev;
 static uint8_t spi_lock;
 static uint16_t spi_div[EOS_SPI_MAX_DEV];
 
-void eos_spi_dev_init(uint8_t wakeup_cause) {
+int eos_spi_dev_init(uint8_t wakeup_cause) {
     int i;
 
     for (i=0; i<EOS_SPI_MAX_DEV; i++) {
@@ -35,6 +35,8 @@ void eos_spi_dev_init(uint8_t wakeup_cause) {
             GPIO_REG(GPIO_OUTPUT_XOR)   &= ~(1 << spi_cfg[i].cspin);
         }
     }
+
+    return EOS_OK;
 }
 
 int eos_spi_select(unsigned char dev) {
diff --git a/fw/fe310/eos/spi_dev.h b/fw/fe310/eos/spi_dev.h
index c18466a..e801f7e 100644
--- a/fw/fe310/eos/spi_dev.h
+++ b/fw/fe310/eos/spi_dev.h
@@ -5,7 +5,7 @@
 #define EOS_SPI_DEV_SDC         2
 #define EOS_SPI_DEV_CAM         3
 
-void eos_spi_dev_init(uint8_t wakeup_cause);
+int eos_spi_dev_init(uint8_t wakeup_cause);
 int eos_spi_select(unsigned char dev);
 int eos_spi_deselect(void);
 
diff --git a/fw/fe310/eos/timer.c b/fw/fe310/eos/timer.c
index dbaaf91..5ae58da 100644
--- a/fw/fe310/eos/timer.c
+++ b/fw/fe310/eos/timer.c
@@ -4,6 +4,7 @@
 #include "encoding.h"
 #include "platform.h"
 
+#include "eos.h"
 #include "msgq.h"
 #include "event.h"
 #include "timer.h"
@@ -46,7 +47,7 @@ void _eos_timer_handle(void) {
     if (*mtimecmp == 0) clear_csr(mie, MIP_MTIP);
 }
 
-void eos_timer_init(uint8_t wakeup_cause) {
+int eos_timer_init(uint8_t wakeup_cause) {
     int i;
     uint64_t *mtimecmp = (uint64_t *) (CLINT_CTRL_ADDR + CLINT_MTIMECMP);
 
@@ -57,6 +58,8 @@ void eos_timer_init(uint8_t wakeup_cause) {
         timer_handler[i] = NULL;
     }
     eos_evtq_set_handler(EOS_EVT_TIMER, timer_handle_evt);
+
+    return EOS_OK;
 }
 
 void eos_timer_set_handler(unsigned char evt, eos_timer_handler_t handler) {
diff --git a/fw/fe310/eos/timer.h b/fw/fe310/eos/timer.h
index 8e846e3..e479483 100644
--- a/fw/fe310/eos/timer.h
+++ b/fw/fe310/eos/timer.h
@@ -11,7 +11,7 @@
 
 typedef void (*eos_timer_handler_t) (unsigned char);
 
-void eos_timer_init(uint8_t wakeup_cause);
+int eos_timer_init(uint8_t wakeup_cause);
 void eos_timer_set_handler(unsigned char evt, eos_timer_handler_t handler);
 
 uint32_t eos_timer_get(unsigned char evt);
diff --git a/fw/fe310/eos/uart.c b/fw/fe310/eos/uart.c
index 4c8adba..7c676ba 100644
--- a/fw/fe310/eos/uart.c
+++ b/fw/fe310/eos/uart.c
@@ -34,7 +34,7 @@ static void uart_handle_intr(void) {
     }
 }
 
-void eos_uart_init(uint8_t wakeup_cause) {
+int eos_uart_init(uint8_t wakeup_cause) {
     int i;
 
     for (i=0; i<EOS_UART_MAX_ETYPE; i++) {
@@ -42,6 +42,8 @@ void eos_uart_init(uint8_t wakeup_cause) {
     }
     eos_evtq_set_handler(EOS_EVT_UART, uart_handle_evt);
     eos_intr_set(INT_UART0_BASE, IRQ_PRIORITY_UART, uart_handle_intr);
+
+    return EOS_OK;
 }
 
 void eos_uart_set_handler(unsigned char type, eos_uart_handler_t handler) {
diff --git a/fw/fe310/eos/uart.h b/fw/fe310/eos/uart.h
index d2e795b..3bb7cb5 100644
--- a/fw/fe310/eos/uart.h
+++ b/fw/fe310/eos/uart.h
@@ -7,7 +7,7 @@
 
 typedef void (*eos_uart_handler_t) (unsigned char);
 
-void eos_uart_init(uint8_t wakeup_cause);
+int eos_uart_init(uint8_t wakeup_cause);
 void eos_uart_set_handler(unsigned char type, eos_uart_handler_t handler);
 
 void eos_uart_txwm_set(uint8_t wm);