From 6a4c8a1f11f6a7bd57b0fd618f455bcdecbfe538 Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Sun, 28 Feb 2021 18:38:37 +0100
Subject: net send will do selected spi dev pause/resume if more is set and
 netowk is not active

---
 fw/fe310/eos/app/root.c         | 12 +++++++++---
 fw/fe310/eos/app/root.h         |  3 ++-
 fw/fe310/eos/eos.c              |  4 ++--
 fw/fe310/eos/eve/eve.c          |  4 ++++
 fw/fe310/eos/eve/eve_platform.c | 12 ++++++++----
 fw/fe310/eos/eve/eve_platform.h | 17 +++++++++++------
 fw/fe310/eos/eve/eve_touch.c    | 11 ++++++++++-
 fw/fe310/eos/net.c              | 33 ++++++++++++++++++++++++++-------
 fw/fe310/eos/power.c            |  4 ++--
 fw/fe310/eos/spi.c              | 22 ++++++++++++++++++++--
 fw/fe310/eos/spi.h              |  7 +++++--
 fw/fe310/eos/spi_dev.c          | 32 +++++++++++++++++++++++++-------
 fw/fe310/eos/spi_dev.h          |  4 ++--
 13 files changed, 126 insertions(+), 39 deletions(-)

(limited to 'fw/fe310/eos')

diff --git a/fw/fe310/eos/app/root.c b/fw/fe310/eos/app/root.c
index a86b291..43bab11 100644
--- a/fw/fe310/eos/app/root.c
+++ b/fw/fe310/eos/app/root.c
@@ -46,11 +46,11 @@ static uint8_t kbd_draw(EVEView *v, uint8_t tag0) {
     return tag0;
 }
 
-void app_root_init(eve_view_constructor_t home_page) {
+void app_screen_init(eve_view_constructor_t home_page) {
     EVERect g;
 
     _app_font_default = &font;
-    eos_spi_dev_start(EOS_DEV_DISP);
+    eve_spi_start();
 
     eve_brightness(0x40);
 
@@ -86,11 +86,17 @@ void app_root_init(eve_view_constructor_t home_page) {
     eve_screen_hide_kbd(&screen);
     eve_screen_draw(&screen);
 
-    eos_spi_dev_stop();
+    eve_spi_stop();
 
     eos_net_acquire_for_evt(EOS_EVT_UI | EVE_ETYPE_INTR, 1);
 }
 
+void app_screen_refresh(void) {
+    eve_spi_start();
+    eve_screen_draw(app_screen());
+    eve_spi_stop();
+}
+
 static void widgets_destroy(EVEWidget *widget, uint16_t widget_size) {
     int i;
 
diff --git a/fw/fe310/eos/app/root.h b/fw/fe310/eos/app/root.h
index 2b6fc63..69624e7 100644
--- a/fw/fe310/eos/app/root.h
+++ b/fw/fe310/eos/app/root.h
@@ -22,7 +22,8 @@ typedef struct APPWidgetSpec {
 } APPWidgetSpec;
 
 EVEScreen *app_screen(void);
-void app_root_init(eve_view_constructor_t home_page);
+void app_screen_init(eve_view_constructor_t home_page);
+void app_screen_refresh(void);
 
 EVEForm *app_form_create(EVEWindow *window, EVEViewStack *stack, APPWidgetSpec spec[], uint16_t spec_size, eve_form_action_t action, eve_form_destructor_t destructor);
 void app_form_destroy(EVEForm *form);
diff --git a/fw/fe310/eos/eos.c b/fw/fe310/eos/eos.c
index b02abed..6214203 100644
--- a/fw/fe310/eos/eos.c
+++ b/fw/fe310/eos/eos.c
@@ -37,7 +37,7 @@ void eos_init(void) {
     eos_net_wake(wakeup_cause);
 
     eve_set_touch_calibration(eve_touch);
-    eos_spi_dev_start(EOS_DEV_DISP);
+    eos_spi_dev_select(EOS_DEV_DISP);
     eve_init(wakeup_cause == EOS_PWR_WAKE_RST);
-    eos_spi_dev_stop();
+    eos_spi_dev_deselect();
 }
diff --git a/fw/fe310/eos/eve/eve.c b/fw/fe310/eos/eve/eve.c
index 6b3943e..f35ccf7 100644
--- a/fw/fe310/eos/eve/eve.c
+++ b/fw/fe310/eos/eve/eve.c
@@ -103,6 +103,7 @@ void eve_dl_start(uint32_t addr, char burst) {
     _dl_addr = addr;
     _dl_burst = burst;
     if (burst) {
+        eve_spi_lock();
         eve_spi_cs_set();
         eve_spi_xchg24(addr | EVE_MEM_WRITE, EVE_SPI_FLAG_TX);
     }
@@ -121,6 +122,7 @@ void eve_dl_end(void) {
     if (_dl_burst) {
         eve_spi_flush();
         eve_spi_cs_clear();
+        eve_spi_unlock();
         _dl_burst = 0;
     }
 }
@@ -266,6 +268,7 @@ int eve_cmd_exec(int w) {
 
 void eve_cmd_burst_start(void) {
     uint32_t addr = EVE_RAM_CMD + _cmd_offset;
+    eve_spi_lock();
     eve_spi_cs_set();
     eve_spi_xchg24(addr | EVE_MEM_WRITE, EVE_SPI_FLAG_TX);
     _cmd_burst = 1;
@@ -274,6 +277,7 @@ void eve_cmd_burst_start(void) {
 void eve_cmd_burst_end(void) {
     eve_spi_flush();
     eve_spi_cs_clear();
+    eve_spi_unlock();
     _cmd_burst = 0;
 }
 
diff --git a/fw/fe310/eos/eve/eve_platform.c b/fw/fe310/eos/eve/eve_platform.c
index 7f1b775..cfaf6d5 100644
--- a/fw/fe310/eos/eve/eve_platform.c
+++ b/fw/fe310/eos/eve/eve_platform.c
@@ -11,15 +11,11 @@
 #include "irq_def.h"
 
 static void handle_time(unsigned char type) {
-    eos_spi_dev_start(EOS_DEV_DISP);
     eve_handle_time();
-    eos_spi_dev_stop();
 }
 
 static void handle_evt(unsigned char type, unsigned char *buffer, uint16_t len) {
-    eos_spi_dev_start(EOS_DEV_DISP);
     eve_handle_touch();
-    eos_spi_dev_stop();
 
     GPIO_REG(GPIO_LOW_IP) = (1 << EVE_PIN_INTR);
     GPIO_REG(GPIO_LOW_IE) |= (1 << EVE_PIN_INTR);
@@ -62,6 +58,14 @@ void eve_platform_init(void) {
     eos_spi_dev_set_div(EOS_DEV_DISP, 4);
 }
 
+void eve_spi_start(void) {
+    eos_spi_dev_select(EOS_DEV_DISP);
+}
+
+void eve_spi_stop(void) {
+    eos_spi_dev_deselect();
+}
+
 #include <stdio.h>
 
 void *eve_malloc(size_t size) {
diff --git a/fw/fe310/eos/eve/eve_platform.h b/fw/fe310/eos/eve/eve_platform.h
index 7d085db..48ea00b 100644
--- a/fw/fe310/eos/eve/eve_platform.h
+++ b/fw/fe310/eos/eve/eve_platform.h
@@ -11,6 +11,15 @@
 #define EVE_SPI_FLAG_BSWAP  EOS_SPI_FLAG_BSWAP
 #define EVE_SPI_FLAG_TX     EOS_SPI_FLAG_TX
 
+void *eve_malloc(size_t);
+void eve_free(void *);
+
+//#define eve_malloc          malloc
+//#define eve_free            free
+
+void eve_spi_start(void);
+void eve_spi_stop(void);
+
 #define eve_spi_cs_set      eos_spi_cs_set
 #define eve_spi_cs_clear    eos_spi_cs_clear
 #define eve_spi_flush       eos_spi_flush
@@ -18,6 +27,8 @@
 #define eve_spi_xchg16      eos_spi_xchg16
 #define eve_spi_xchg24      eos_spi_xchg24
 #define eve_spi_xchg32      eos_spi_xchg32
+#define eve_spi_lock        eos_spi_lock
+#define eve_spi_unlock      eos_spi_unlock
 
 void eve_time_sleep(uint32_t ms);
 void eve_timer_set(uint32_t ms);
@@ -25,9 +36,3 @@ void eve_timer_clear(void);
 uint64_t eve_time_get_tick(void);
 
 void eve_platform_init(void);
-
-//#define eve_malloc          malloc
-//#define eve_free            free
-
-void *eve_malloc(size_t);
-void eve_free(void *);
\ No newline at end of file
diff --git a/fw/fe310/eos/eve/eve_touch.c b/fw/fe310/eos/eve/eve_touch.c
index e3dae58..fff1eec 100644
--- a/fw/fe310/eos/eve/eve_touch.c
+++ b/fw/fe310/eos/eve/eve_touch.c
@@ -69,8 +69,11 @@ void eve_handle_touch(void) {
     char int_ccomplete = 0;
     uint8_t tag0 = _tag0;
     uint8_t touch_last = 0;
-    uint8_t flags = eve_read8(REG_INT_FLAGS) & _intr_mask;
+    uint8_t flags;
 
+    eve_spi_start();
+
+    flags = eve_read8(REG_INT_FLAGS) & _intr_mask;
     if (!_multitouch && (flags & EVE_INT_TOUCH)) _multitouch = 1;
     for (i=0; i<EVE_MAX_TOUCH; i++) {
         uint8_t touch_tag;
@@ -261,9 +264,13 @@ void eve_handle_touch(void) {
             _touch_handler(_touch_handler_param, tag0, i);
         }
     }
+
+    eve_spi_stop();
 }
 
 void eve_handle_time(void) {
+    eve_spi_start();
+
     if (_touch_handler && _touch_timer.tag) {
         EVETouch *touch = &_touch[_touch_timer.idx];
 
@@ -296,6 +303,8 @@ void eve_handle_time(void) {
             _touch_timer_clear();
         }
     }
+
+    eve_spi_stop();
 }
 
 void eve_touch_init(void) {
diff --git a/fw/fe310/eos/net.c b/fw/fe310/eos/net.c
index 46700e8..eb5e6f2 100644
--- a/fw/fe310/eos/net.c
+++ b/fw/fe310/eos/net.c
@@ -486,17 +486,36 @@ void eos_net_free(unsigned char *buffer, unsigned char more) {
 int eos_net_send(unsigned char type, unsigned char *buffer, uint16_t len, unsigned char more) {
     int rv = EOS_OK;
 
-    if (more) {
-        type |= EOS_NET_MTYPE_FLAG_ONEW;
-    }
+    if (more) type |= EOS_NET_MTYPE_FLAG_ONEW;
+
     clear_csr(mstatus, MSTATUS_MIE);
-    if ((net_state_flags & NET_STATE_FLAG_RUN) && (net_state_flags & NET_STATE_FLAG_CTS)) {
+    if ((type & EOS_NET_MTYPE_FLAG_ONEW) && !(net_state_flags & NET_STATE_FLAG_RUN)) {
+        uint8_t spi_dev;
+
+        set_csr(mstatus, MSTATUS_MIE);
+        spi_dev = eos_spi_dev();
+        rv = eos_spi_dev_deselect();
+        if (rv) return rv;
+
+        clear_csr(mstatus, MSTATUS_MIE);
+        while (!(net_state_flags & NET_STATE_FLAG_CTS)) {
+            asm volatile ("wfi");
+            set_csr(mstatus, MSTATUS_MIE);
+            clear_csr(mstatus, MSTATUS_MIE);
+        }
         net_xchg_start(type, buffer, len);
+        set_csr(mstatus, MSTATUS_MIE);
+
+        eos_spi_dev_select(spi_dev);
     } else {
-        rv = eos_msgq_push(&net_send_q, type, buffer, len);
-        if (rv) eos_bufq_push(&net_buf_q, buffer);
+        if ((net_state_flags & NET_STATE_FLAG_RUN) && (net_state_flags & NET_STATE_FLAG_CTS)) {
+            net_xchg_start(type, buffer, len);
+        } else {
+            rv = eos_msgq_push(&net_send_q, type, buffer, len);
+            if (rv) eos_bufq_push(&net_buf_q, buffer);
+        }
+        set_csr(mstatus, MSTATUS_MIE);
     }
-    set_csr(mstatus, MSTATUS_MIE);
 
     return rv;
 }
diff --git a/fw/fe310/eos/power.c b/fw/fe310/eos/power.c
index 8717553..55960c9 100644
--- a/fw/fe310/eos/power.c
+++ b/fw/fe310/eos/power.c
@@ -74,9 +74,9 @@ uint8_t eos_power_reset_cause(void) {
 }
 
 void eos_power_sleep(void) {
-    eos_spi_dev_start(EOS_DEV_DISP);
+    eos_spi_dev_select(EOS_DEV_DISP);
     eve_sleep();
-    eos_spi_dev_stop();
+    eos_spi_dev_deselect();
     eos_net_sleep(1000);
 
     AON_REG(AON_PMUKEY) = 0x51F15E;
diff --git a/fw/fe310/eos/spi.c b/fw/fe310/eos/spi.c
index fb47313..29970bd 100644
--- a/fw/fe310/eos/spi.c
+++ b/fw/fe310/eos/spi.c
@@ -20,6 +20,7 @@
 
 static uint8_t spi_dev;
 static uint8_t spi_dev_cs_pin;
+static uint8_t spi_lock;
 static volatile uint8_t spi_state_flags;
 static unsigned char spi_in_xchg;
 
@@ -61,7 +62,7 @@ void eos_spi_init(void) {
     // SPI1_REG(SPI_REG_CSDEF) = 0xFFFF;
 }
 
-void eos_spi_start(unsigned char dev, uint32_t div, uint32_t csid, uint8_t pin) {
+int eos_spi_start(unsigned char dev, uint32_t div, uint32_t csid, uint8_t pin) {
     spi_dev = dev;
     spi_state_flags = 0;
     SPI1_REG(SPI_REG_SCKDIV) = div;
@@ -73,11 +74,28 @@ void eos_spi_start(unsigned char dev, uint32_t div, uint32_t csid, uint8_t pin)
         spi_dev_cs_pin = pin;
     }
     eos_intr_set_handler(INT_SPI1_BASE, eos_spi_handle_xchg);
+
+    return EOS_OK;
 }
 
-void eos_spi_stop(void) {
+int eos_spi_stop(void) {
+    if (spi_lock) return EOS_ERR_BUSY;
     eos_spi_flush();
     spi_dev = 0;
+
+    return EOS_OK;
+}
+
+uint8_t eos_spi_dev(void) {
+    return spi_dev;
+}
+
+void eos_spi_lock(void) {
+    spi_lock = 1;
+}
+
+void eos_spi_unlock(void) {
+    spi_lock = 0;
 }
 
 void eos_spi_set_handler(unsigned char dev, eos_evt_handler_t handler) {
diff --git a/fw/fe310/eos/spi.h b/fw/fe310/eos/spi.h
index b291ad3..7cbff08 100644
--- a/fw/fe310/eos/spi.h
+++ b/fw/fe310/eos/spi.h
@@ -9,8 +9,11 @@
 #define EOS_SPI_FLAG_BSWAP  0x04
 
 void eos_spi_init(void);
-void eos_spi_start(unsigned char dev, uint32_t div, uint32_t csid, uint8_t pin);
-void eos_spi_stop(void);
+int eos_spi_start(unsigned char dev, uint32_t div, uint32_t csid, uint8_t pin);
+int eos_spi_stop(void);
+uint8_t eos_spi_dev(void);
+void eos_spi_lock(void);
+void eos_spi_unlock(void);
 void eos_spi_set_handler(unsigned char dev, eos_evt_handler_t handler);
 
 void _eos_spi_xchg_init(unsigned char *buffer, uint16_t len, uint8_t flags);
diff --git a/fw/fe310/eos/spi_dev.c b/fw/fe310/eos/spi_dev.c
index aed26bc..abb616d 100644
--- a/fw/fe310/eos/spi_dev.c
+++ b/fw/fe310/eos/spi_dev.c
@@ -4,6 +4,7 @@
 #include "encoding.h"
 #include "platform.h"
 
+#include "eos.h"
 #include "spi.h"
 #include "net.h"
 
@@ -22,24 +23,41 @@
 
 static uint16_t spi_dev_div[EOS_DEV_MAX_DEV];
 
-void eos_spi_dev_start(unsigned char dev) {
-    eos_net_stop();
+int eos_spi_dev_select(unsigned char dev) {
+    uint8_t spi_dev = eos_spi_dev();
+    int rv = EOS_ERR;
+
+    if (spi_dev) {
+        int rv;
+
+        rv = eos_spi_stop();
+        if (rv) return rv;
+    } else {
+        eos_net_stop();
+    }
     switch (dev) {
         case EOS_DEV_DISP:
-            eos_spi_start(dev, spi_dev_div[dev-1], SPI_CSID_DISP, 0);
+            rv = eos_spi_start(dev, spi_dev_div[dev-1], SPI_CSID_DISP, 0);
             break;
         case EOS_DEV_CARD:
-            eos_spi_start(dev, spi_dev_div[dev-1], SPI_CSID_CARD, 0);
+            rv = eos_spi_start(dev, spi_dev_div[dev-1], SPI_CSID_CARD, 0);
             break;
         case EOS_DEV_CAM:
-            eos_spi_start(dev, spi_dev_div[dev-1], SPI_CSID_NONE, SPI_CSPIN_CAM);
+            rv = eos_spi_start(dev, spi_dev_div[dev-1], SPI_CSID_NONE, SPI_CSPIN_CAM);
             break;
     }
+
+    return rv;
 }
 
-void eos_spi_dev_stop(void) {
-    eos_spi_stop();
+int eos_spi_dev_deselect(void) {
+    int rv;
+
+    rv = eos_spi_stop();
+    if (rv) return rv;
     eos_net_start();
+
+    return EOS_OK;
 }
 
 void eos_spi_dev_init(void) {
diff --git a/fw/fe310/eos/spi_dev.h b/fw/fe310/eos/spi_dev.h
index 21dcee9..7882e51 100644
--- a/fw/fe310/eos/spi_dev.h
+++ b/fw/fe310/eos/spi_dev.h
@@ -5,7 +5,7 @@
 #define EOS_DEV_MAX_DEV     3
 
 void eos_spi_dev_init(void);
-void eos_spi_dev_start(unsigned char dev);
-void eos_spi_dev_stop(void);
+int eos_spi_dev_select(unsigned char dev);
+int eos_spi_dev_deselect(void);
 
 void eos_spi_dev_set_div(unsigned char dev, uint16_t div);
-- 
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