DISCO-F746NGのAudioInからの音声信号をLCDに波形として出力する、簡易なオシロスコープです。 This program is easy oscilloscope. The program draws waveform of signals from AudioIn on DISCO-F746NG.
Dependencies: BSP_DISCO_F746NG_patch_fixed LCD_DISCO_F746NG mbed
BSP_overwrite.cpp
- Committer:
- nanase
- Date:
- 2015-12-26
- Revision:
- 0:36a62c23e60c
File content as of revision 0:36a62c23e60c:
#include "main.h" DMA_HandleTypeDef hdma_sai_rx; /* ----- AUDIO IN ----- */ void BSP_AUDIO_IN_HalfTransfer_CallBack(void) { audio_in_buffer_offset = 0; audio_in_buffer_length = BufferSize / 2; audio_in_buffer_captured = true; } void BSP_AUDIO_IN_TransferComplete_CallBack(void) { audio_in_buffer_offset = BufferSize / 2; audio_in_buffer_length = BufferSize / 2; audio_in_buffer_captured = true; } void BSP_AUDIO_IN_Error_CallBack(void) { error_trap(); } void AUDIO_IN_SAIx_DMAx_IRQHandler(void) { HAL_DMA_IRQHandler(&hdma_sai_rx); } void BSP_AUDIO_IN_MspInit(SAI_HandleTypeDef *hsai, void *Params) { //static DMA_HandleTypeDef hdma_sai_rx; GPIO_InitTypeDef gpio_init_structure; /* Enable SAI clock */ AUDIO_IN_SAIx_CLK_ENABLE(); /* Enable SD GPIO clock */ AUDIO_IN_SAIx_SD_ENABLE(); /* CODEC_SAI pin configuration: SD pin */ gpio_init_structure.Pin = AUDIO_IN_SAIx_SD_PIN; gpio_init_structure.Mode = GPIO_MODE_AF_PP; gpio_init_structure.Pull = GPIO_NOPULL; gpio_init_structure.Speed = GPIO_SPEED_FAST; gpio_init_structure.Alternate = AUDIO_IN_SAIx_SD_AF; HAL_GPIO_Init(AUDIO_IN_SAIx_SD_GPIO_PORT, &gpio_init_structure); /* Enable Audio INT GPIO clock */ AUDIO_IN_INT_GPIO_ENABLE(); /* Audio INT pin configuration: input */ gpio_init_structure.Pin = AUDIO_IN_INT_GPIO_PIN; gpio_init_structure.Mode = GPIO_MODE_INPUT; gpio_init_structure.Pull = GPIO_NOPULL; gpio_init_structure.Speed = GPIO_SPEED_FAST; HAL_GPIO_Init(AUDIO_IN_INT_GPIO_PORT, &gpio_init_structure); /* Enable the DMA clock */ AUDIO_IN_SAIx_DMAx_CLK_ENABLE(); if(hsai->Instance == AUDIO_IN_SAIx) { /* Configure the hdma_sai_rx handle parameters */ hdma_sai_rx.Init.Channel = AUDIO_IN_SAIx_DMAx_CHANNEL; hdma_sai_rx.Init.Direction = DMA_PERIPH_TO_MEMORY; hdma_sai_rx.Init.PeriphInc = DMA_PINC_DISABLE; hdma_sai_rx.Init.MemInc = DMA_MINC_ENABLE; hdma_sai_rx.Init.PeriphDataAlignment = AUDIO_IN_SAIx_DMAx_PERIPH_DATA_SIZE; hdma_sai_rx.Init.MemDataAlignment = AUDIO_IN_SAIx_DMAx_MEM_DATA_SIZE; hdma_sai_rx.Init.Mode = DMA_CIRCULAR; hdma_sai_rx.Init.Priority = DMA_PRIORITY_HIGH; hdma_sai_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE; hdma_sai_rx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL; hdma_sai_rx.Init.MemBurst = DMA_MBURST_SINGLE; hdma_sai_rx.Init.PeriphBurst = DMA_MBURST_SINGLE; hdma_sai_rx.Instance = AUDIO_IN_SAIx_DMAx_STREAM; /* Associate the DMA handle */ __HAL_LINKDMA(hsai, hdmarx, hdma_sai_rx); /* Deinitialize the Stream for new transfer */ HAL_DMA_DeInit(&hdma_sai_rx); /* Configure the DMA Stream */ HAL_DMA_Init(&hdma_sai_rx); } /* SAI DMA IRQ Channel configuration */ HAL_NVIC_SetPriority(AUDIO_IN_SAIx_DMAx_IRQ, AUDIO_IN_IRQ_PREPRIO, 0); HAL_NVIC_EnableIRQ(AUDIO_IN_SAIx_DMAx_IRQ); /* Audio INT IRQ Channel configuration */ HAL_NVIC_SetPriority(AUDIO_IN_INT_IRQ, AUDIO_IN_IRQ_PREPRIO, 0); HAL_NVIC_EnableIRQ(AUDIO_IN_INT_IRQ); }