SPI is configured as DMA mode by default;Fix i2s_stop

.vscode/settings.json

@@ -0,0 +1,6 @@
+{
+    "files.associations": {
+        "fft_soft.h": "c",
+        "devices.h": "c"
+    }
+}

lib/bsp/device/dmac.cpp

@@ -530,6 +530,10 @@ public:
         dmac.chen |= 0x101 << channel_;
     }
 
+    virtual void stop() override
+    {
+        atomic_set(session_.stop_signal, 1);
+    }
 private:
     static void dma_completion_isr(void *userdata)
     {

lib/bsp/device/i2s.cpp

@@ -27,6 +27,8 @@
 
 using namespace sys;
 
+#define I2S_DMA_BLOCK_TIME          1000UL
+
 #define BUFFER_COUNT 2
 #define COMMON_ENTRY                                         \
     i2s_data *data = (i2s_data *)userdata;                   \
@@ -373,6 +375,9 @@ public:
 
     virtual void stop() override
     {
+        dma_stop(session_.transmit_dma);
+        configASSERT(pdTRUE == xSemaphoreTake(session_.completion_event, I2S_DMA_BLOCK_TIME));
+        dma_close(session_.transmit_dma);
         i2s_transmit_set_enable(session_.transmit, 0);
     }
 

lib/bsp/device/spi.cpp

@@ -30,7 +30,7 @@
 
 using namespace sys;
 
-#define SPI_TRANSMISSION_THRESHOLD  0x800UL
+#define SPI_TRANSMISSION_THRESHOLD  0x0UL
 #define SPI_DMA_BLOCK_TIME          1000UL
 
 /* SPI Controller */

lib/freertos/include/hal.h

@@ -120,6 +120,7 @@ void dma_transmit(handle_t file, const volatile void *src, volatile void *dest,
  */
 void dma_loop_async(handle_t file, const volatile void **srcs, size_t src_num, volatile void **dests, size_t dest_num, bool src_inc, bool dest_inc, size_t element_size, size_t count, size_t burst_size, dma_stage_completion_handler_t stage_completion_handler, void *stage_completion_handler_data, SemaphoreHandle_t completion_event, int *stop_signal);
 
+void dma_stop(handle_t file);
 #ifdef __cplusplus
 }
 #endif

lib/freertos/include/kernel/driver.hpp

@@ -385,6 +385,7 @@ public:
     virtual void config(uint32_t priority) = 0;
     virtual void transmit_async(const volatile void *src, volatile void *dest, bool src_inc, bool dest_inc, size_t element_size, size_t count, size_t burst_size, SemaphoreHandle_t completion_event) = 0;
     virtual void loop_async(const volatile void **srcs, size_t src_num, volatile void **dests, size_t dest_num, bool src_inc, bool dest_inc, size_t element_size, size_t count, size_t burst_size, dma_stage_completion_handler_t stage_completion_handler, void *stage_completion_handler_data, SemaphoreHandle_t completion_event, int *stop_signal) = 0;
+    virtual void stop() = 0;
 };
 
 class dmac_driver : public driver

lib/freertos/kernel/devices.cpp

@@ -951,6 +951,11 @@ void dma_loop_async(handle_t file, const volatile void **srcs, size_t src_num, v
     dma->loop_async(srcs, src_num, dests, dest_num, src_inc, dest_inc, element_size, count, burst_size, stage_completion_handler, stage_completion_handler_data, completion_event, stop_signal);
 }
 
+void dma_stop(handle_t file)
+{
+    COMMON_ENTRY(dma);
+    dma->stop();
+}
 /* System */
 
 driver_registry_t *sys::system_install_driver(const char *name, object_ptr<driver> driver)