From 2e6facf66ee3d6aa37f2fb41096b1763261506a7 Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Sat, 7 Dec 2019 17:17:21 +0100
Subject: eos evtq flags refactor; net buf flags refator for all modules

---
 code/fe310/eos/eos.c        |   4 ++
 code/fe310/eos/eos.h        |   4 +-
 code/fe310/eos/event.c      |   4 ++
 code/fe310/eos/event.h      |   1 +
 code/fe310/eos/evt_def.h    |   3 +-
 code/fe310/eos/i2s.c        |  29 +++++-----
 code/fe310/eos/i2s.h        |   4 +-
 code/fe310/eos/irq_def.h    |   4 +-
 code/fe310/eos/msgq.c       |   2 +-
 code/fe310/eos/net.c        | 128 +++++++++++++++++++++++---------------------
 code/fe310/eos/net.h        |   3 ++
 code/fe310/eos/sock.c       |  45 +++++++---------
 code/fe310/eos/sock.h       |   6 +--
 code/fe310/eos/spi.c        |  35 ++++++------
 code/fe310/eos/spi.h        |   3 +-
 code/fe310/eos/timer.c      |  44 ++++++++-------
 code/fe310/eos/timer.h      |   3 +-
 code/fe310/eos/trap_entry.S |   2 +-
 code/fe310/eos/wifi.c       |  43 ++++++---------
 code/fe310/eos/wifi.h       |   6 +--
 20 files changed, 191 insertions(+), 182 deletions(-)

(limited to 'code/fe310')

diff --git a/code/fe310/eos/eos.c b/code/fe310/eos/eos.c
index a0bf4c9..bb231d1 100644
--- a/code/fe310/eos/eos.c
+++ b/code/fe310/eos/eos.c
@@ -2,9 +2,11 @@
 #include "interrupt.h"
 #include "timer.h"
 #include "i2s.h"
+#include "uart.h"
 #include "spi.h"
 #include "net.h"
 #include "wifi.h"
+#include "cell.h"
 #include "sock.h"
 #include "eve.h"
 
@@ -15,9 +17,11 @@ void eos_init(void) {
     eos_intr_init();
     eos_timer_init();
     eos_i2s_init();
+    eos_uart_init();
     eos_spi_init();
     eos_net_init();
     eos_wifi_init();
+    eos_cell_init();
     eos_sock_init();
     eos_spi_dev_start(EOS_SPI_DEV_DISP);
     eos_eve_init();
diff --git a/code/fe310/eos/eos.h b/code/fe310/eos/eos.h
index f1d7907..08bd10b 100644
--- a/code/fe310/eos/eos.h
+++ b/code/fe310/eos/eos.h
@@ -1,7 +1,7 @@
 #define EOS_OK                  0
 #define EOS_ERR                 -1
-#define EOS_ERR_Q_FULL          -10
-#define EOS_ERR_Q_EMPTY         -11
+#define EOS_ERR_FULL            -10
+#define EOS_ERR_EMPTY           -11
 #define EOS_ERR_NET             -20
 
 void eos_init(void);
diff --git a/code/fe310/eos/event.c b/code/fe310/eos/event.c
index 9371ca7..ed313fb 100644
--- a/code/fe310/eos/event.c
+++ b/code/fe310/eos/event.c
@@ -32,6 +32,10 @@ int eos_evtq_push(unsigned char type, unsigned char *buffer, uint16_t len) {
     return ret;
 }
 
+int eos_evtq_push_isr(unsigned char type, unsigned char *buffer, uint16_t len) {
+    return eos_msgq_push(&_eos_event_q, type, buffer, len);
+}
+
 void eos_evtq_pop(unsigned char *type, unsigned char **buffer, uint16_t *len) {
     clear_csr(mstatus, MSTATUS_MIE);
     eos_msgq_pop(&_eos_event_q, type, buffer, len);
diff --git a/code/fe310/eos/event.h b/code/fe310/eos/event.h
index 8a16dfd..6beb263 100644
--- a/code/fe310/eos/event.h
+++ b/code/fe310/eos/event.h
@@ -6,6 +6,7 @@ typedef void (*eos_evt_fptr_t) (unsigned char, unsigned char *, uint16_t);
 
 void eos_evtq_init(void);
 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);
 void eos_evtq_bad_handler(unsigned char type, unsigned char *buffer, uint16_t len);
 void eos_evtq_set_handler(unsigned char type, eos_evt_fptr_t handler);
diff --git a/code/fe310/eos/evt_def.h b/code/fe310/eos/evt_def.h
index 529ee72..0cd63bb 100644
--- a/code/fe310/eos/evt_def.h
+++ b/code/fe310/eos/evt_def.h
@@ -2,7 +2,8 @@
 #define EOS_EVT_AUDIO               0x20
 #define EOS_EVT_NET                 0x30
 #define EOS_EVT_SPI                 0x40
-#define EOS_EVT_USER                0x50
+#define EOS_EVT_UART                0x50
+#define EOS_EVT_USER                0x60
 
 #define EOS_EVT_MAX_EVT             8
 #define EOS_EVT_MASK                0xF0
diff --git a/code/fe310/eos/i2s.c b/code/fe310/eos/i2s.c
index d71a31d..4702bc3 100644
--- a/code/fe310/eos/i2s.c
+++ b/code/fe310/eos/i2s.c
@@ -33,8 +33,8 @@ uint32_t _eos_i2s_spk_wm = 0;
 uint32_t _eos_i2s_mic_evt_enable = 0;
 uint32_t _eos_i2s_spk_evt_enable = 0;
 
-static eos_i2s_fptr_t spk_evt_handler = NULL;
-static eos_i2s_fptr_t mic_evt_handler = NULL;
+static eos_i2s_fptr_t i2s_spk_handler = NULL;
+static eos_i2s_fptr_t i2s_mic_handler = NULL;
 
 static void _abuf_init(EOSABuf *buf, uint8_t *array, uint16_t size) {
     buf->idx_r = 0;
@@ -44,7 +44,7 @@ static void _abuf_init(EOSABuf *buf, uint8_t *array, uint16_t size) {
 }
 
 static int _abuf_push8(EOSABuf *buf, uint8_t sample) {
-    if ((uint16_t)(buf->idx_w - buf->idx_r) == buf->size) return EOS_ERR_Q_FULL;
+    if ((uint16_t)(buf->idx_w - buf->idx_r) == buf->size) return EOS_ERR_FULL;
 
     buf->array[EOS_ABUF_IDX_MASK(buf->idx_w, buf->size)] = sample;
     buf->idx_w++;
@@ -52,7 +52,7 @@ static int _abuf_push8(EOSABuf *buf, uint8_t sample) {
 }
 
 static int _abuf_push16(EOSABuf *buf, uint16_t sample) {
-    if ((uint16_t)(buf->idx_w - buf->idx_r) == buf->size) return EOS_ERR_Q_FULL;
+    if ((uint16_t)(buf->idx_w - buf->idx_r) == buf->size) return EOS_ERR_FULL;
 
     buf->array[EOS_ABUF_IDX_MASK(buf->idx_w, buf->size)] = sample >> 8;
     buf->array[EOS_ABUF_IDX_MASK(buf->idx_w + 1, buf->size)] = sample & 0xFF;
@@ -62,7 +62,7 @@ static int _abuf_push16(EOSABuf *buf, uint16_t sample) {
 
 static int _abuf_pop8(EOSABuf *buf, uint8_t *sample) {
     if (buf->idx_r == buf->idx_w) {
-        return EOS_ERR_Q_EMPTY;
+        return EOS_ERR_EMPTY;
     } else {
         *sample = buf->array[EOS_ABUF_IDX_MASK(buf->idx_r, buf->size)];
         buf->idx_r++;
@@ -72,7 +72,7 @@ static int _abuf_pop8(EOSABuf *buf, uint8_t *sample) {
 
 static int _abuf_pop16(EOSABuf *buf, uint16_t *sample) {
     if (buf->idx_r == buf->idx_w) {
-        return EOS_ERR_Q_EMPTY;
+        return EOS_ERR_EMPTY;
     } else {
         *sample = buf->array[EOS_ABUF_IDX_MASK(buf->idx_r, buf->size)] << 8;
         *sample |= buf->array[EOS_ABUF_IDX_MASK(buf->idx_r + 1, buf->size)];
@@ -94,13 +94,13 @@ static uint16_t _abuf_len(EOSABuf *buf) {
 static void i2s_handler_evt(unsigned char type, unsigned char *buffer, uint16_t len) {
     switch(type & ~EOS_EVT_MASK) {
         case I2S_ETYPE_MIC:
-            if (mic_evt_handler) mic_evt_handler(type);
+            if (i2s_mic_handler) i2s_mic_handler(type);
             clear_csr(mstatus, MSTATUS_MIE);
             _eos_i2s_mic_evt_enable = 1;
             set_csr(mstatus, MSTATUS_MIE);
             break;
         case I2S_ETYPE_SPK:
-            if (spk_evt_handler) spk_evt_handler(type);
+            if (i2s_spk_handler) i2s_spk_handler(type);
             clear_csr(mstatus, MSTATUS_MIE);
             _eos_i2s_spk_evt_enable = 1;
             set_csr(mstatus, MSTATUS_MIE);
@@ -115,7 +115,6 @@ extern void _eos_i2s_start_pwm(void);
 
 void eos_i2s_init(void) {
     eos_evtq_set_handler(EOS_EVT_AUDIO, i2s_handler_evt);
-    eos_evtq_set_flags(EOS_EVT_AUDIO | I2S_ETYPE_MIC, EOS_NET_FLAG_BACQ);
 
     GPIO_REG(GPIO_INPUT_EN)     &= ~(1 << I2S_PIN_CK);
     GPIO_REG(GPIO_OUTPUT_EN)    |=  (1 << I2S_PIN_CK);
@@ -249,10 +248,12 @@ void eos_i2s_mic_init(uint8_t *mic_arr, uint16_t mic_arr_size) {
     set_csr(mstatus, MSTATUS_MIE);
 }
 
-void eos_i2s_mic_set_handler(eos_i2s_fptr_t wm_handler) {
+void eos_i2s_mic_set_handler(eos_i2s_fptr_t wm_handler, uint8_t flags) {
     clear_csr(mstatus, MSTATUS_MIE);
-    mic_evt_handler = wm_handler;
+    i2s_mic_handler = wm_handler;
     set_csr(mstatus, MSTATUS_MIE);
+
+    if (flags) eos_evtq_set_flags(EOS_EVT_AUDIO | I2S_ETYPE_MIC, flags);
 }
 
 void eos_i2s_mic_set_wm(uint16_t wm) {
@@ -308,10 +309,12 @@ void eos_i2s_spk_init(uint8_t *spk_arr, uint16_t spk_arr_size) {
     set_csr(mstatus, MSTATUS_MIE);
 }
 
-void eos_i2s_spk_set_handler(eos_i2s_fptr_t wm_handler) {
+void eos_i2s_spk_set_handler(eos_i2s_fptr_t wm_handler, uint8_t flags) {
     clear_csr(mstatus, MSTATUS_MIE);
-    spk_evt_handler = wm_handler;
+    i2s_spk_handler = wm_handler;
     set_csr(mstatus, MSTATUS_MIE);
+
+    if (flags) eos_evtq_set_flags(EOS_EVT_AUDIO | I2S_ETYPE_SPK, flags);
 }
 
 void eos_i2s_spk_set_wm(uint16_t wm) {
diff --git a/code/fe310/eos/i2s.h b/code/fe310/eos/i2s.h
index 8ae7d98..af91dd3 100644
--- a/code/fe310/eos/i2s.h
+++ b/code/fe310/eos/i2s.h
@@ -16,14 +16,14 @@ void eos_i2s_init(void);
 void eos_i2s_start(uint32_t sample_rate, unsigned char fmt);
 void eos_i2s_stop(void);
 void eos_i2s_mic_init(uint8_t *mic_arr, uint16_t mic_arr_size);
-void eos_i2s_mic_set_handler(eos_i2s_fptr_t wm_handler);
+void eos_i2s_mic_set_handler(eos_i2s_fptr_t wm_handler, uint8_t flags);
 void eos_i2s_mic_set_wm(uint16_t wm);
 uint16_t eos_i2s_mic_len(void);
 uint16_t eos_i2s_mic_read(uint8_t *sample, uint16_t ssize);
 int eos_i2s_mic_pop8(uint8_t *sample);
 int eos_i2s_mic_pop16(uint16_t *sample);
 void eos_i2s_spk_init(uint8_t *mic_arr, uint16_t mic_arr_size);
-void eos_i2s_spk_set_handler(eos_i2s_fptr_t wm_handler);
+void eos_i2s_spk_set_handler(eos_i2s_fptr_t wm_handler, uint8_t flags);
 void eos_i2s_spk_set_wm(uint16_t wm);
 uint16_t eos_i2s_spk_len(void);
 uint16_t eos_i2s_spk_write(uint8_t *sample, uint16_t ssize);
diff --git a/code/fe310/eos/irq_def.h b/code/fe310/eos/irq_def.h
index 4584b01..b6a9dbb 100644
--- a/code/fe310/eos/irq_def.h
+++ b/code/fe310/eos/irq_def.h
@@ -4,4 +4,6 @@
 #define IRQ_PRIORITY_SPI_XCHG   5
 
 #define IRQ_PRIORITY_NET_CTS    4
-#define IRQ_PRIORITY_NET_RTS    4
\ No newline at end of file
+#define IRQ_PRIORITY_NET_RTS    4
+
+#define IRQ_PRIORITY_UART       1
\ No newline at end of file
diff --git a/code/fe310/eos/msgq.c b/code/fe310/eos/msgq.c
index d0fe405..35e0d15 100644
--- a/code/fe310/eos/msgq.c
+++ b/code/fe310/eos/msgq.c
@@ -20,7 +20,7 @@ void eos_msgq_init(EOSMsgQ *msgq, EOSMsgItem *array, uint8_t size) {
 }
 
 int eos_msgq_push(EOSMsgQ *msgq, unsigned char type, unsigned char *buffer, uint16_t len) {
-    if ((uint8_t)(msgq->idx_w - msgq->idx_r) == msgq->size) return EOS_ERR_Q_FULL;
+    if ((uint8_t)(msgq->idx_w - msgq->idx_r) == msgq->size) return EOS_ERR_FULL;
 
     uint8_t idx = EOS_MSGQ_IDX_MASK(msgq->idx_w, msgq->size);
     msgq->array[idx].type = type;
diff --git a/code/fe310/eos/net.c b/code/fe310/eos/net.c
index 319a3f5..f3a82b8 100644
--- a/code/fe310/eos/net.c
+++ b/code/fe310/eos/net.c
@@ -44,7 +44,6 @@ static eos_evt_fptr_t evt_handler[EOS_NET_MAX_MTYPE];
 static uint16_t evt_handler_flags_buf_free = 0;
 static uint16_t evt_handler_flags_buf_acq = 0;
 
-extern EOSMsgQ _eos_event_q;
 extern uint32_t _eos_spi_state_len;
 extern uint32_t _eos_spi_state_idx_tx;
 extern uint32_t _eos_spi_state_idx_rx;
@@ -106,7 +105,39 @@ static void net_xchg_start(unsigned char type, unsigned char *buffer, uint16_t l
     SPI1_REG(SPI_REG_IE) = SPI_IP_RXWM;
 }
 
-static void net_xchg_handler(void) {
+static int net_xchg_next(unsigned char *_buffer) {
+    unsigned char type;
+    unsigned char *buffer = NULL;
+    uint16_t len;
+
+    eos_msgq_pop(&net_send_q, &type, &buffer, &len);
+    if (type) {
+        net_xchg_start(type, buffer, len);
+    } else if (net_state_flags & NET_STATE_FLAG_RTS) {
+        if (_buffer == NULL) _buffer = net_bufq_pop();
+        if (_buffer) {
+            net_xchg_start(0, _buffer, 0);
+            return 0;
+        }
+    }
+    return 1;
+}
+
+void eos_net_xchg_done(void) {
+    SPI1_REG(SPI_REG_CSMODE) = SPI_CSMODE_AUTO;
+    if (net_state_type) {
+        int r = eos_evtq_push_isr(EOS_EVT_NET | net_state_type, _eos_spi_state_buf, net_state_len_rx);
+        if (r) net_bufq_push(_eos_spi_state_buf);
+    } else if (((net_state_flags & NET_STATE_FLAG_ONEW) || net_state_next_cnt) && (net_state_next_buf == NULL)) {
+        net_state_next_buf = _eos_spi_state_buf;
+        net_state_flags &= ~NET_STATE_FLAG_ONEW;
+    } else {
+        net_bufq_push(_eos_spi_state_buf);
+    }
+    net_state_flags &= ~NET_STATE_FLAG_XCHG;
+}
+
+static void net_handler_xchg(void) {
     volatile uint32_t r1, r2;
 
     if (net_state_flags & NET_STATE_FLAG_RST) {
@@ -155,38 +186,6 @@ static void net_xchg_handler(void) {
     eos_spi_xchg_handler();
 }
 
-static int net_xchg_next(unsigned char *_buffer) {
-    unsigned char type;
-    unsigned char *buffer = NULL;
-    uint16_t len;
-
-    eos_msgq_pop(&net_send_q, &type, &buffer, &len);
-    if (type) {
-        net_xchg_start(type, buffer, len);
-    } else if (net_state_flags & NET_STATE_FLAG_RTS) {
-        if (_buffer == NULL) _buffer = net_bufq_pop();
-        if (_buffer) {
-            net_xchg_start(0, _buffer, 0);
-            return 0;
-        }
-    }
-    return 1;
-}
-
-void eos_net_xchg_done(void) {
-    SPI1_REG(SPI_REG_CSMODE) = SPI_CSMODE_AUTO;
-    if (net_state_type) {
-        int r = eos_msgq_push(&_eos_event_q, EOS_EVT_NET | net_state_type, _eos_spi_state_buf, net_state_len_rx);
-        if (r) net_bufq_push(_eos_spi_state_buf);
-    } else if (((net_state_flags & NET_STATE_FLAG_ONEW) || net_state_next_cnt) && (net_state_next_buf == NULL)) {
-        net_state_next_buf = _eos_spi_state_buf;
-        net_state_flags &= ~NET_STATE_FLAG_ONEW;
-    } else {
-        net_bufq_push(_eos_spi_state_buf);
-    }
-    net_state_flags &= ~NET_STATE_FLAG_XCHG;
-}
-
 static void net_handler_cts(void) {
     GPIO_REG(GPIO_RISE_IP) = (1 << NET_PIN_CTS);
     net_state_flags |= NET_STATE_FLAG_CTS;
@@ -210,37 +209,13 @@ static void net_handler_rts(void) {
 
 static void net_handler_evt(unsigned char type, unsigned char *buffer, uint16_t len) {
     unsigned char idx = (type & ~EOS_EVT_MASK) - 1;
-    uint16_t buf_free = ((uint16_t)1 << idx) & evt_handler_flags_buf_free;
-    uint16_t buf_acq = ((uint16_t)1 << idx) & evt_handler_flags_buf_acq;
 
     if (idx >= EOS_NET_MAX_MTYPE) {
         eos_evtq_bad_handler(type, buffer, len);
         eos_net_free(buffer, 0);
         return;
     }
-    if (buf_free) {
-        eos_net_free(buffer, buf_acq);
-        buffer = NULL;
-        len = 0;
-    }
-
-    evt_handler[idx](type, buffer, len);
-
-    if (buf_free && buf_acq) eos_net_release();
-}
-
-void eos_net_set_handler(unsigned char mtype, eos_evt_fptr_t handler, uint8_t flags) {
-    if (mtype && (mtype <= EOS_NET_MAX_MTYPE)) {
-        mtype--;
-    } else {
-        return;
-    }
-    if (flags) {
-        uint16_t flag = (uint16_t)1 << mtype;
-        if (flags & EOS_NET_FLAG_BFREE) evt_handler_flags_buf_free |= flag;
-        if (flags & EOS_NET_FLAG_BACQ) evt_handler_flags_buf_acq |= flag;
-    }
-    evt_handler[mtype] = handler;
+    _eos_net_handle(type, buffer, len, idx, evt_handler, &evt_handler_flags_buf_free, &evt_handler_flags_buf_acq);
 }
 
 void eos_net_init(void) {
@@ -272,7 +247,7 @@ void eos_net_init(void) {
 }
 
 void eos_net_start(void) {
-    eos_intr_set_handler(INT_SPI1_BASE, net_xchg_handler);
+    eos_intr_set_handler(INT_SPI1_BASE, net_handler_xchg);
     SPI1_REG(SPI_REG_SCKDIV) = SPI_DIV_NET;
     SPI1_REG(SPI_REG_CSID) = SPI_CS_IDX_NET;
 
@@ -298,6 +273,39 @@ void eos_net_stop(void) {
     }
 }
 
+void _eos_net_handle(unsigned char type, unsigned char *buffer, uint16_t len, unsigned char idx, eos_evt_fptr_t handlers[], uint16_t *flags_buf_free, uint16_t *flags_buf_acq) {
+    uint16_t buf_free = ((uint16_t)1 << idx) & *flags_buf_free;
+    uint16_t buf_acq = ((uint16_t)1 << idx) & *flags_buf_acq;
+
+    if (buf_free) {
+        eos_net_free(buffer, buf_acq);
+        buffer = NULL;
+        len = 0;
+    }
+
+    handlers[idx](type, buffer, len);
+
+    if (buf_free && buf_acq) eos_net_release();
+}
+
+void _eos_net_set_handler(unsigned char idx, eos_evt_fptr_t handler, eos_evt_fptr_t handlers[], uint16_t flags, uint16_t *flags_buf_free, uint16_t *flags_buf_acq) {
+    if (flags) {
+        uint16_t flag = (uint16_t)1 << idx;
+        if (flags & EOS_NET_FLAG_BFREE) *flags_buf_free |= flag;
+        if (flags & EOS_NET_FLAG_BACQ) *flags_buf_acq |= flag;
+    }
+    handlers[idx] = handler;
+}
+
+void eos_net_set_handler(unsigned char mtype, eos_evt_fptr_t handler, uint8_t flags) {
+    if (mtype && (mtype <= EOS_NET_MAX_MTYPE)) {
+        mtype--;
+    } else {
+        return;
+    }
+    _eos_net_set_handler(mtype, handler, evt_handler, flags, &evt_handler_flags_buf_free, &evt_handler_flags_buf_acq);
+}
+
 int _eos_net_acquire(unsigned char reserved) {
     int ret = 0;
 
diff --git a/code/fe310/eos/net.h b/code/fe310/eos/net.h
index 127942c..e0fdbf9 100644
--- a/code/fe310/eos/net.h
+++ b/code/fe310/eos/net.h
@@ -19,7 +19,10 @@ void eos_net_xchg_done(void);
 void eos_net_init(void);
 void eos_net_start(void);
 void eos_net_stop(void);
+void _eos_net_handle(unsigned char type, unsigned char *buffer, uint16_t len, unsigned char idx, eos_evt_fptr_t handlers[], uint16_t *flags_buf_free, uint16_t *flags_buf_acq);
+void _eos_net_set_handler(unsigned char idx, eos_evt_fptr_t handler, eos_evt_fptr_t handlers[], uint16_t flags, uint16_t *flags_buf_free, uint16_t *flags_buf_acq);
 void eos_net_set_handler(unsigned char type, eos_evt_fptr_t handler, uint8_t flags);
+
 int _eos_net_acquire(unsigned char reserved);
 void eos_net_acquire(void);
 void eos_net_release(void);
diff --git a/code/fe310/eos/sock.c b/code/fe310/eos/sock.c
index 2c6ba5d..077c93d 100644
--- a/code/fe310/eos/sock.c
+++ b/code/fe310/eos/sock.c
@@ -8,9 +8,9 @@
 
 #include "sock.h"
 
-static eos_sock_fptr_t sock_handler[EOS_SOCK_MAX_SOCK];
-static uint16_t sock_handler_flags_buf_free = 0;
-static uint16_t sock_handler_flags_buf_acq = 0;
+static eos_evt_fptr_t evt_handler[EOS_SOCK_MAX_SOCK];
+static uint16_t evt_handler_flags_buf_free = 0;
+static uint16_t evt_handler_flags_buf_acq = 0;
 
 static void sock_handler_evt(unsigned char type, unsigned char *buffer, uint16_t len) {
     if ((buffer == NULL) || (len < 2)) {
@@ -28,24 +28,28 @@ static void sock_handler_evt(unsigned char type, unsigned char *buffer, uint16_t
             eos_net_free(buffer, 0);
             return;
         }
-        uint16_t buf_free = ((uint16_t)1 << sock) & sock_handler_flags_buf_free;
-        uint16_t buf_acq = ((uint16_t)1 << sock) & sock_handler_flags_buf_acq;
-        if (buf_free) {
-            eos_net_free(buffer, buf_acq);
-            buffer = NULL;
-            len = 0;
-        }
-
-        sock_handler[sock](buffer, len);
-
-        if (buf_free && buf_acq) eos_net_release();
+        _eos_net_handle(type, buffer, len, sock, evt_handler, &evt_handler_flags_buf_free, &evt_handler_flags_buf_acq);
     }
 }
 
 void eos_sock_init(void) {
+    int i;
+
+    for (i=0; i<EOS_SOCK_MAX_SOCK; i++) {
+        evt_handler[i] = eos_evtq_bad_handler;
+    }
     eos_net_set_handler(EOS_NET_MTYPE_SOCK, sock_handler_evt, 0);
 }
 
+void eos_sock_set_handler(int sock, eos_evt_fptr_t handler, uint8_t flags) {
+    if (sock && (sock <= EOS_SOCK_MAX_SOCK)) {
+        sock--;
+    } else {
+        return;
+    }
+    _eos_net_set_handler(sock, handler, evt_handler, flags, &evt_handler_flags_buf_free, &evt_handler_flags_buf_acq);
+}
+
 int eos_sock_open_udp(void) {
     unsigned char type = EOS_SOCK_MTYPE_OPEN_DGRAM;
     unsigned char *buffer = eos_net_alloc();
@@ -92,16 +96,3 @@ void eos_sock_getfrom(unsigned char *buffer, EOSNetAddr *addr) {
 }
 
 
-void eos_sock_set_handler(int sock, eos_sock_fptr_t handler, uint8_t flags) {
-    if (sock && (sock <= EOS_SOCK_MAX_SOCK)) {
-        sock--;
-    } else {
-        return;
-    }
-    if (flags) {
-        uint16_t flag = (uint16_t)1 << sock;
-        if (flags & EOS_NET_FLAG_BFREE) sock_handler_flags_buf_free |= flag;
-        if (flags & EOS_NET_FLAG_BACQ) sock_handler_flags_buf_acq |= flag;
-    }
-    sock_handler[sock] = handler;
-}
diff --git a/code/fe310/eos/sock.h b/code/fe310/eos/sock.h
index 3e0527b..db1db21 100644
--- a/code/fe310/eos/sock.h
+++ b/code/fe310/eos/sock.h
@@ -1,4 +1,5 @@
 #include <stdint.h>
+#include "event.h"
 
 #define EOS_SOCK_MTYPE_PKT          0
 #define EOS_SOCK_MTYPE_OPEN_DGRAM   1
@@ -15,11 +16,10 @@ typedef struct EOSNetAddr {
     uint16_t port;
 } EOSNetAddr;
 
-typedef void (*eos_sock_fptr_t) (unsigned char *, uint16_t);
-
 void eos_sock_init(void);
+void eos_sock_set_handler(int sock, eos_evt_fptr_t handler, uint8_t flags);
+
 int eos_sock_open_udp(void);
 void eos_sock_close(int sock);
 int eos_sock_sendto(int sock, unsigned char *buffer, uint16_t size, unsigned char more, EOSNetAddr *addr);
 void eos_sock_getfrom(unsigned char *buffer, EOSNetAddr *addr);
-void eos_sock_set_handler(int sock, eos_sock_fptr_t handler, uint8_t flags);
diff --git a/code/fe310/eos/spi.c b/code/fe310/eos/spi.c
index 56ef318..d752bfb 100644
--- a/code/fe310/eos/spi.c
+++ b/code/fe310/eos/spi.c
@@ -18,8 +18,6 @@
 #define MAX(X, Y)               (((X) > (Y)) ? (X) : (Y))
 #define SPI_IOF_MASK            (((uint32_t)1 << IOF_SPI1_SCK) | ((uint32_t)1 << IOF_SPI1_MOSI) | ((uint32_t)1 << IOF_SPI1_MISO)) | ((uint32_t)1 << IOF_SPI1_SS0) | ((uint32_t)1 << IOF_SPI1_SS2) | ((uint32_t)1 << IOF_SPI1_SS3)
 
-extern EOSMsgQ _eos_event_q;
-
 static uint8_t spi_dev;
 static uint8_t spi_dev_cs_pin;
 static uint8_t spi_state_flags;
@@ -60,6 +58,14 @@ static void spi_xchg_wait(void) {
 }
 
 void eos_spi_init(void) {
+    int i;
+
+    for (i=0; i<EOS_SPI_MAX_DEV; i++) {
+        evt_handler[i] = eos_evtq_bad_handler;
+    }
+    eos_evtq_set_handler(EOS_EVT_SPI, spi_handler_evt);
+    eos_intr_set(INT_SPI1_BASE, IRQ_PRIORITY_SPI_XCHG, NULL);
+
     GPIO_REG(GPIO_INPUT_EN)     &= ~(1 << SPI_CS_PIN_CAM);
     GPIO_REG(GPIO_OUTPUT_EN)    |=  (1 << SPI_CS_PIN_CAM);
     GPIO_REG(GPIO_PULLUP_EN)    &= ~(1 << SPI_CS_PIN_CAM);
@@ -77,9 +83,6 @@ void eos_spi_init(void) {
 
     // There is no way here to change the CS polarity.
     // SPI1_REG(SPI_REG_CSDEF) = 0xFFFF;
-
-    eos_intr_set(INT_SPI1_BASE, IRQ_PRIORITY_SPI_XCHG, NULL);
-    eos_evtq_set_handler(EOS_EVT_SPI, spi_handler_evt);
 }
 
 void eos_spi_dev_start(unsigned char dev) {
@@ -116,6 +119,17 @@ void eos_spi_dev_stop(void) {
     eos_net_start();
 }
 
+void eos_spi_set_handler(unsigned char dev, eos_evt_fptr_t handler, uint8_t flags) {
+    if (dev && (dev <= EOS_SPI_MAX_DEV)) {
+        dev--;
+    } else {
+        return;
+    }
+    evt_handler[dev] = handler;
+
+    if (flags) eos_evtq_set_flags(EOS_EVT_SPI | dev + 1, flags);
+}
+
 void eos_spi_xchg(unsigned char *buffer, uint16_t len, uint8_t flags) {
     if (spi_in_xchg) spi_xchg_wait();
     if (!(flags & EOS_SPI_FLAG_TX) && (spi_state_flags & EOS_SPI_FLAG_TX)) spi_flush();
@@ -140,7 +154,7 @@ static void spi_xchg_done(void) {
     } else {
         spi_state_flags &= ~SPI_FLAG_XCHG;
         if (!(spi_state_flags & (EOS_SPI_FLAG_MORE | SPI_FLAG_CS))) eos_spi_cs_clear();
-        eos_msgq_push(&_eos_event_q, EOS_EVT_SPI | spi_dev, _eos_spi_state_buf, _eos_spi_state_len);
+        eos_evtq_push_isr(EOS_EVT_SPI | spi_dev, _eos_spi_state_buf, _eos_spi_state_len);
     }
 }
 
@@ -367,12 +381,3 @@ uint32_t eos_spi_xchg32(uint32_t data, uint8_t flags) {
 
     return r;
 }
-
-void eos_spi_set_handler(unsigned char dev, eos_evt_fptr_t handler) {
-    if (dev && (dev <= EOS_SPI_MAX_DEV)) {
-        dev--;
-    } else {
-        return;
-    }
-    evt_handler[dev] = handler;
-}
diff --git a/code/fe310/eos/spi.h b/code/fe310/eos/spi.h
index 394c400..1619b18 100644
--- a/code/fe310/eos/spi.h
+++ b/code/fe310/eos/spi.h
@@ -16,6 +16,7 @@
 void eos_spi_init(void);
 void eos_spi_dev_start(unsigned char dev);
 void eos_spi_dev_stop(void);
+void eos_spi_set_handler(unsigned char dev, eos_evt_fptr_t handler, uint8_t flags);
 
 void eos_spi_xchg(unsigned char *buffer, uint16_t len, uint8_t flags);
 void eos_spi_xchg_handler(void);
@@ -26,5 +27,3 @@ uint8_t eos_spi_xchg8(uint8_t data, uint8_t flags);
 uint16_t eos_spi_xchg16(uint16_t data, uint8_t flags);
 uint32_t eos_spi_xchg24(uint32_t data, uint8_t flags);
 uint32_t eos_spi_xchg32(uint32_t data, uint8_t flags);
-
-void eos_spi_set_handler(unsigned char dev, eos_evt_fptr_t handler);
\ No newline at end of file
diff --git a/code/fe310/eos/timer.c b/code/fe310/eos/timer.c
index f443a8d..9fd8d23 100644
--- a/code/fe310/eos/timer.c
+++ b/code/fe310/eos/timer.c
@@ -14,8 +14,6 @@
 static eos_timer_fptr_t timer_handler[EOS_TIMER_MAX_ETYPE + 1];
 static uint64_t timer_next[EOS_TIMER_MAX_ETYPE + 1];
 
-extern EOSMsgQ _eos_event_q;
-
 static void timer_handler_evt(unsigned char type, unsigned char *buffer, uint16_t len) {
     unsigned char idx = (type & ~EOS_EVT_MASK) - 1;
 
@@ -26,7 +24,7 @@ static void timer_handler_evt(unsigned char type, unsigned char *buffer, uint16_
     }
 }
 
-void eos_timer_handle(void) {
+void _eos_timer_handle(void) {
     int i;
     volatile uint64_t *mtime = (uint64_t *) (CLINT_CTRL_ADDR + CLINT_MTIME);
     uint64_t *mtimecmp = (uint64_t *) (CLINT_CTRL_ADDR + CLINT_MTIMECMP);
@@ -39,7 +37,7 @@ void eos_timer_handle(void) {
             if (i == EOS_TIMER_MAX_ETYPE) {
                 timer_handler[EOS_TIMER_MAX_ETYPE](0);
             } else {
-                eos_msgq_push(&_eos_event_q, EOS_EVT_TIMER | i + 1, NULL, 0);
+                eos_evtq_push_isr(EOS_EVT_TIMER | i + 1, NULL, 0);
             }
         }
         next = next && timer_next[i] ? MIN(next, timer_next[i]) : (next ? next : timer_next[i]);
@@ -54,13 +52,31 @@ void eos_timer_init(void) {
 
     clear_csr(mie, MIP_MTIP);
     *mtimecmp = 0;
-    for (i = 0; i <= EOS_TIMER_MAX_ETYPE; i++) {
+    for (i=0; i<=EOS_TIMER_MAX_ETYPE; i++) {
         timer_next[i] = 0;
         timer_handler[i] = NULL;
     }
     eos_evtq_set_handler(EOS_EVT_TIMER, timer_handler_evt);
 }
 
+void eos_timer_set_handler(unsigned char evt, eos_timer_fptr_t handler, uint8_t flags) {
+    uint64_t *mtimecmp = (uint64_t *) (CLINT_CTRL_ADDR + CLINT_MTIMECMP);
+
+    if (evt && (evt <= EOS_TIMER_MAX_ETYPE)) {
+        evt--;
+    } else if (evt == 0) {
+        evt = EOS_TIMER_MAX_ETYPE;
+    } else {
+        return;
+    }
+
+    clear_csr(mie, MIP_MTIP);
+    timer_handler[evt] = handler;
+    if (*mtimecmp != 0) set_csr(mie, MIP_MTIP);
+
+    if ((evt != EOS_TIMER_MAX_ETYPE) && flags) eos_evtq_set_flags(EOS_EVT_TIMER | evt + 1, flags);
+}
+
 uint64_t eos_timer_get(unsigned char evt) {
     uint64_t *mtimecmp = (uint64_t *) (CLINT_CTRL_ADDR + CLINT_MTIMECMP);
     uint64_t ret = 0;
@@ -130,24 +146,6 @@ void eos_timer_clear(unsigned char evt) {
     if (*mtimecmp != 0) set_csr(mie, MIP_MTIP);
 }
 
-void eos_timer_set_handler(unsigned char evt, eos_timer_fptr_t handler, uint8_t flags) {
-    uint64_t *mtimecmp = (uint64_t *) (CLINT_CTRL_ADDR + CLINT_MTIMECMP);
-
-    if (evt && (evt <= EOS_TIMER_MAX_ETYPE)) {
-        evt--;
-    } else if (evt == 0) {
-        evt = EOS_TIMER_MAX_ETYPE;
-    } else {
-        return;
-    }
-
-    clear_csr(mie, MIP_MTIP);
-    timer_handler[evt] = handler;
-    if (*mtimecmp != 0) set_csr(mie, MIP_MTIP);
-
-    if ((evt != EOS_TIMER_MAX_ETYPE) && flags) eos_evtq_set_flags(EOS_EVT_TIMER | evt + 1, flags);
-}
-
 void eos_timer_sleep(uint32_t msec) {
     volatile uint64_t *mtime = (uint64_t *) (CLINT_CTRL_ADDR + CLINT_MTIME);
 
diff --git a/code/fe310/eos/timer.h b/code/fe310/eos/timer.h
index dff9b2b..e8416ab 100644
--- a/code/fe310/eos/timer.h
+++ b/code/fe310/eos/timer.h
@@ -8,8 +8,9 @@
 typedef void (*eos_timer_fptr_t) (unsigned char);
 
 void eos_timer_init(void);
+void eos_timer_set_handler(unsigned char evt, eos_timer_fptr_t handler, uint8_t flags);
+
 uint64_t eos_timer_get(unsigned char evt);
 void eos_timer_set(uint32_t msec, unsigned char evt, unsigned char b);
 void eos_timer_clear(unsigned char evt);
-void eos_timer_set_handler(unsigned char evt, eos_timer_fptr_t handler, uint8_t flags);
 void eos_timer_sleep(uint32_t msec);
diff --git a/code/fe310/eos/trap_entry.S b/code/fe310/eos/trap_entry.S
index 3939a3e..5948b13 100644
--- a/code/fe310/eos/trap_entry.S
+++ b/code/fe310/eos/trap_entry.S
@@ -477,7 +477,7 @@ trap_entry_text:
   call _exit
 
 handle_timer:
-  call eos_timer_handle
+  call _eos_timer_handle
   j trap_exit_text
 
 handle_ext:
diff --git a/code/fe310/eos/wifi.c b/code/fe310/eos/wifi.c
index 67682aa..688e675 100644
--- a/code/fe310/eos/wifi.c
+++ b/code/fe310/eos/wifi.c
@@ -8,9 +8,9 @@
 
 #include "wifi.h"
 
-static eos_wifi_fptr_t wifi_handler[EOS_WIFI_MAX_MTYPE];
-static uint16_t wifi_handler_flags_buf_free = 0;
-static uint16_t wifi_handler_flags_buf_acq = 0;
+static eos_evt_fptr_t evt_handler[EOS_WIFI_MAX_MTYPE];
+static uint16_t evt_handler_flags_buf_free = 0;
+static uint16_t evt_handler_flags_buf_acq = 0;
 
 static void wifi_handler_evt(unsigned char type, unsigned char *buffer, uint16_t len) {
     if ((buffer == NULL) || (len < 1)) {
@@ -26,23 +26,25 @@ static void wifi_handler_evt(unsigned char type, unsigned char *buffer, uint16_t
         return;
     }
 
-    uint16_t buf_free = ((uint16_t)1 << mtype) & wifi_handler_flags_buf_free;
-    uint16_t buf_acq = ((uint16_t)1 << mtype) & wifi_handler_flags_buf_acq;
-    if (buf_free) {
-        eos_net_free(buffer, buf_acq);
-        buffer = NULL;
-        len = 0;
-    }
-
-    wifi_handler[mtype](buffer, len);
-
-    if (buf_free && buf_acq) eos_net_release();
+    _eos_net_handle(type, buffer, len, mtype, evt_handler, &evt_handler_flags_buf_free, &evt_handler_flags_buf_acq);
 }
 
 void eos_wifi_init(void) {
+    int i;
+
+    for (i=0; i<EOS_WIFI_MAX_MTYPE; i++) {
+        evt_handler[i] = eos_evtq_bad_handler;
+    }
     eos_net_set_handler(EOS_NET_MTYPE_WIFI, wifi_handler_evt, 0);
 }
 
+void eos_wifi_set_handler(int mtype, eos_evt_fptr_t handler, uint8_t flags) {
+    if (mtype >= EOS_WIFI_MAX_MTYPE) {
+        return;
+    }
+    _eos_net_set_handler(mtype, handler, evt_handler, flags, &evt_handler_flags_buf_free, &evt_handler_flags_buf_acq);
+}
+
 void eos_wifi_connect(const char *ssid, const char *pass) {
     int ssid_len = strlen(ssid);
     int pass_len = strlen(pass);
@@ -61,16 +63,3 @@ void eos_wifi_disconnect(void) {
     buffer[0] = EOS_WIFI_MTYPE_DISCONNECT;
     eos_net_send(EOS_NET_MTYPE_WIFI, buffer, 1, 0);
 }
-
-void eos_wifi_set_handler(int mtype, eos_wifi_fptr_t handler, uint8_t flags) {
-    if (mtype >= EOS_WIFI_MAX_MTYPE) {
-        return;
-    }
-
-    if (flags) {
-        uint16_t flag = (uint16_t)1 << mtype;
-        if (flags & EOS_NET_FLAG_BFREE) wifi_handler_flags_buf_free |= flag;
-        if (flags & EOS_NET_FLAG_BACQ) wifi_handler_flags_buf_acq |= flag;
-    }
-    wifi_handler[mtype] = handler;
-}
diff --git a/code/fe310/eos/wifi.h b/code/fe310/eos/wifi.h
index d46d25b..3587d1d 100644
--- a/code/fe310/eos/wifi.h
+++ b/code/fe310/eos/wifi.h
@@ -1,4 +1,5 @@
 #include <stdint.h>
+#include "event.h"
 
 #define EOS_WIFI_MTYPE_SCAN         0
 #define EOS_WIFI_MTYPE_CONNECT      1
@@ -6,9 +7,8 @@
 
 #define EOS_WIFI_MAX_MTYPE          3
 
-typedef void (*eos_wifi_fptr_t) (unsigned char *, uint16_t);
-
 void eos_wifi_init(void);
+void eos_wifi_set_handler(int mtype, eos_evt_fptr_t handler, uint8_t flags);
+
 void eos_wifi_connect(const char *ssid, const char *pass);
 void eos_wifi_disconnect(void);
-void eos_wifi_set_handler(int mtype, eos_wifi_fptr_t handler, uint8_t flags);
\ No newline at end of file
-- 
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