Tomona Nanase
DISCO-F746NGのAudioOutから正弦波をスイープとして出力します。ダブルバッファリングを使って、リアルタイムにデータ生成をしています。 This program outputs sine sweep from AudioOut on DISCO-F746NG. The program uses double buffering when generates data signals.
Dependencies: BSP_DISCO_F746NG_patch_fixed LCD_DISCO_F746NG mbed
Diff: BSP_overwrite.cpp
- Revision:
- 0:ece4ec581d2b
diff -r 000000000000 -r ece4ec581d2b BSP_overwrite.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/BSP_overwrite.cpp Sat Dec 26 07:20:53 2015 +0000
@@ -0,0 +1,102 @@
+#include "main.h"
+
+void BSP_AUDIO_OUT_HalfTransfer_CallBack(void)
+{
+ fill_buffer(0, BufferSize / 2);
+ BSP_AUDIO_OUT_ChangeBuffer((uint16_t*)&sweep_buffer[0], BufferByteSize / 2);
+}
+
+void BSP_AUDIO_OUT_TransferComplete_CallBack(void)
+{
+ fill_buffer(BufferSize / 2, BufferSize / 2);
+ BSP_AUDIO_OUT_ChangeBuffer((uint16_t*)&sweep_buffer[BufferSize / 2], BufferByteSize / 2);
+}
+
+void BSP_AUDIO_OUT_Error_CallBack(void)
+{
+ error_trap();
+}
+
+DMA_HandleTypeDef hdma_sai_tx;
+
+void AUDIO_OUT_SAIx_DMAx_IRQHandler(void)
+{
+ HAL_DMA_IRQHandler(&hdma_sai_tx);
+}
+
+void BSP_AUDIO_OUT_MspInit(SAI_HandleTypeDef *hsai, void *Params)
+{
+ //static DMA_HandleTypeDef hdma_sai_tx;
+ GPIO_InitTypeDef gpio_init_structure;
+
+ /* Enable SAI clock */
+ AUDIO_OUT_SAIx_CLK_ENABLE();
+
+ /* Enable GPIO clock */
+ AUDIO_OUT_SAIx_MCLK_ENABLE();
+ AUDIO_OUT_SAIx_SCK_SD_ENABLE();
+ AUDIO_OUT_SAIx_FS_ENABLE();
+
+ /* CODEC_SAI pins configuration: FS, SCK, MCK and SD pins ------------------*/
+ gpio_init_structure.Pin = AUDIO_OUT_SAIx_FS_PIN;
+ gpio_init_structure.Mode = GPIO_MODE_AF_PP;
+ gpio_init_structure.Pull = GPIO_NOPULL;
+ gpio_init_structure.Speed = GPIO_SPEED_HIGH;
+ gpio_init_structure.Alternate = AUDIO_OUT_SAIx_FS_SD_MCLK_AF;
+ HAL_GPIO_Init(AUDIO_OUT_SAIx_FS_GPIO_PORT, &gpio_init_structure);
+
+ gpio_init_structure.Pin = AUDIO_OUT_SAIx_SCK_PIN;
+ gpio_init_structure.Mode = GPIO_MODE_AF_PP;
+ gpio_init_structure.Pull = GPIO_NOPULL;
+ gpio_init_structure.Speed = GPIO_SPEED_HIGH;
+ gpio_init_structure.Alternate = AUDIO_OUT_SAIx_SCK_AF;
+ HAL_GPIO_Init(AUDIO_OUT_SAIx_SCK_SD_GPIO_PORT, &gpio_init_structure);
+
+ gpio_init_structure.Pin = AUDIO_OUT_SAIx_SD_PIN;
+ gpio_init_structure.Mode = GPIO_MODE_AF_PP;
+ gpio_init_structure.Pull = GPIO_NOPULL;
+ gpio_init_structure.Speed = GPIO_SPEED_HIGH;
+ gpio_init_structure.Alternate = AUDIO_OUT_SAIx_FS_SD_MCLK_AF;
+ HAL_GPIO_Init(AUDIO_OUT_SAIx_SCK_SD_GPIO_PORT, &gpio_init_structure);
+
+ gpio_init_structure.Pin = AUDIO_OUT_SAIx_MCLK_PIN;
+ gpio_init_structure.Mode = GPIO_MODE_AF_PP;
+ gpio_init_structure.Pull = GPIO_NOPULL;
+ gpio_init_structure.Speed = GPIO_SPEED_HIGH;
+ gpio_init_structure.Alternate = AUDIO_OUT_SAIx_FS_SD_MCLK_AF;
+ HAL_GPIO_Init(AUDIO_OUT_SAIx_MCLK_GPIO_PORT, &gpio_init_structure);
+
+ /* Enable the DMA clock */
+ AUDIO_OUT_SAIx_DMAx_CLK_ENABLE();
+
+ if(hsai->Instance == AUDIO_OUT_SAIx) {
+ /* Configure the hdma_saiTx handle parameters */
+ hdma_sai_tx.Init.Channel = AUDIO_OUT_SAIx_DMAx_CHANNEL;
+ hdma_sai_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
+ hdma_sai_tx.Init.PeriphInc = DMA_PINC_DISABLE;
+ hdma_sai_tx.Init.MemInc = DMA_MINC_ENABLE;
+ hdma_sai_tx.Init.PeriphDataAlignment = AUDIO_OUT_SAIx_DMAx_PERIPH_DATA_SIZE;
+ hdma_sai_tx.Init.MemDataAlignment = AUDIO_OUT_SAIx_DMAx_MEM_DATA_SIZE;
+ hdma_sai_tx.Init.Mode = DMA_CIRCULAR;
+ hdma_sai_tx.Init.Priority = DMA_PRIORITY_HIGH;
+ hdma_sai_tx.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
+ hdma_sai_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
+ hdma_sai_tx.Init.MemBurst = DMA_MBURST_SINGLE;
+ hdma_sai_tx.Init.PeriphBurst = DMA_PBURST_SINGLE;
+
+ hdma_sai_tx.Instance = AUDIO_OUT_SAIx_DMAx_STREAM;
+
+ /* Associate the DMA handle */
+ __HAL_LINKDMA(hsai, hdmatx, hdma_sai_tx);
+
+ /* Deinitialize the Stream for new transfer */
+ HAL_DMA_DeInit(&hdma_sai_tx);
+
+ /* Configure the DMA Stream */
+ HAL_DMA_Init(&hdma_sai_tx);
+ }
+
+ /* SAI DMA IRQ Channel configuration */
+ HAL_NVIC_SetPriority(AUDIO_OUT_SAIx_DMAx_IRQ, AUDIO_OUT_IRQ_PREPRIO, 0);
+ HAL_NVIC_EnableIRQ(AUDIO_OUT_SAIx_DMAx_IRQ);
+}