Revert "fix: DMA callback"

This reverts commit 706bc70.

Author: HalfSweet

src/fw/drivers/sf32lb/uart.c

@@ -24,7 +24,8 @@
 #include "system/passert.h"
 #include "uart_definitions.h"
 
-static UARTDevice *s_uart_dev_ptr[6] = {0};
+#define container_of(ptr, type, member) \
+    ((type *)((char *)(ptr) - offsetof(type, member)))
 
 typedef enum {
   UART_FullDuplex = 0,
@@ -139,34 +140,6 @@ static UARTPinFunction_t get_uart_pin_fun(UART_HandleTypeDef *uart) {
   return pin_fun;
 }
 
-static uint32_t get_uart_index(UART_HandleTypeDef *uart) {
-  if (uart->Instance == USART1) {
-    return 0;
-  } else if (uart->Instance == USART2) {
-    return 0;
-  } else if (uart->Instance == USART3) {
-    return 0;
-  }
-#ifdef USART4
-  else if (uart->Instance == USART4) {
-    return 0;
-  }
-#endif
-#ifdef USART5
-  else if (uart->Instance == USART5) {
-    return 0;
-  }
-#endif
-#ifdef USART6
-  else if (uart->Instance == USART6) {
-    return 0;
-  }
-#endif
-  else {
-    WTF;
-  }
-}
-
 static void prv_init(UARTDevice *dev, UARTInitMode_t mode) {
   if (mode == UART_FullDuplex) {
     dev->periph->Init.Mode = UART_MODE_TX_RX;
@@ -178,8 +151,6 @@ static void prv_init(UARTDevice *dev, UARTInitMode_t mode) {
     WTF;
   }
 
-  s_uart_dev_ptr[get_uart_index(dev->periph)] = dev;
-
   UARTPinFunction_t pin_fun = get_uart_pin_fun(dev->periph);
   switch (mode) {
     case UART_FullDuplex:
@@ -214,10 +185,7 @@ void uart_init_tx_only(UARTDevice *dev) { prv_init(dev, UART_TxOnly); }
 
 void uart_init_rx_only(UARTDevice *dev) { prv_init(dev, UART_RxOnly); }
 
-void uart_deinit(UARTDevice *dev) {
-  HAL_UART_DeInit(dev->periph);
-  s_uart_dev_ptr[get_uart_index(dev->periph)] = NULL;
-}
+void uart_deinit(UARTDevice *dev) { HAL_UART_DeInit(dev->periph); }
 
 void uart_set_baud_rate(UARTDevice *dev, uint32_t baud_rate) {
   PBL_ASSERTN(dev->state->initialized);
@@ -331,7 +299,8 @@ void uart_irq_handler(UARTDevice *dev) {
         .framing_error = uart_has_rx_framing_error(dev),
     };
     // DMA
-    if (dev->state->rx_dma_buffer && (__HAL_UART_GET_FLAG(dev->periph, UART_FLAG_IDLE) != RESET) &&
+    if (dev->state->rx_dma_buffer &&
+        (__HAL_UART_GET_FLAG(dev->periph, UART_FLAG_IDLE) != RESET) &&
         (__HAL_UART_GET_IT_SOURCE(dev->periph, UART_IT_IDLE) != RESET)) {
       // process bytes from the DMA buffer
       const uint32_t dma_length = dev->state->rx_dma_length;
@@ -408,10 +377,11 @@ void uart_clear_all_interrupt_flags(UARTDevice *dev) {
 }
 
 void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart) {
-  // TODO: need to find a way to convert huart to dev as dev is not container of huart
+  //TODO: need to find a way to convert huart to dev as dev is not container of huart
+#if 0  
   size_t recv_len;
   size_t recv_total_index;
-  UARTDevice *dev = s_uart_dev_ptr[get_uart_index(huart)];
+  UARTDevice *dev = container_of(huart, UARTDevice, periph);
 
   recv_total_index = dev->state->rx_dma_length - __HAL_DMA_GET_COUNTER(dev->rx_dma);
   if (recv_total_index < dev->state->rx_dma_index)
@@ -428,11 +398,12 @@ void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart) {
       }
     }
   }
+#endif    
 }
 
-void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {
-  // TODO:
-  // HAL_UART_RxHalfCpltCallback(huart);
+void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) { 
+  //TODO: 
+  //HAL_UART_RxHalfCpltCallback(huart); 
 }
 
 // DMA