p igmon / Mbed 2 deprecated uGen4x

PCM Digital Synthesizer

Dependencies:   LCD mbed

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i2s_dma.cpp@0:ad6637c36dc7, 2016-09-02 (annotated)

Committer:
p_igmon
Date:
Fri Sep 02 13:24:16 2016 +0000
Revision:
0:ad6637c36dc7
for Micro Gen4 Synthesizer

Who changed what in which revision?

UserRevisionLine numberNew contents of line
p_igmon 0:ad6637c36dc7 1 #include "synthesizer.h"
p_igmon 0:ad6637c36dc7 2
p_igmon 0:ad6637c36dc7 3 extern Serial pc;
p_igmon 0:ad6637c36dc7 4 //extern RawSerial PC;
p_igmon 0:ad6637c36dc7 5 extern DigitalOut myled;
p_igmon 0:ad6637c36dc7 6
p_igmon 0:ad6637c36dc7 7 extern GENERATOR *pgen;// = &dgen[0];
p_igmon 0:ad6637c36dc7 8 extern GENERATOR_TEMP *pgen_temp;// = &dgen_temp[0];
p_igmon 0:ad6637c36dc7 9
p_igmon 0:ad6637c36dc7 10 extern I2S_HandleTypeDef hi2s2;
p_igmon 0:ad6637c36dc7 11 extern DMA_HandleTypeDef hdma_i2s2_ext_tx;
p_igmon 0:ad6637c36dc7 12
p_igmon 0:ad6637c36dc7 13
p_igmon 0:ad6637c36dc7 14 S16 DMA_Buffer[DMA_BUFFERSIZE];
p_igmon 0:ad6637c36dc7 15 //S16 * DMA_Buffer = (S16 *)0x20008000;
p_igmon 0:ad6637c36dc7 16 __IO BUFFER_StateTypeDef BufferOffset = DMA_Idle;
p_igmon 0:ad6637c36dc7 17
p_igmon 0:ad6637c36dc7 18
p_igmon 0:ad6637c36dc7 19 static const PinMap PinMap_I2S_MCK[] = {
p_igmon 0:ad6637c36dc7 20 {PC_6, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
p_igmon 0:ad6637c36dc7 21 // {PC_7, SPI_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
p_igmon 0:ad6637c36dc7 22 {NC, NC, 0}
p_igmon 0:ad6637c36dc7 23 };
p_igmon 0:ad6637c36dc7 24
p_igmon 0:ad6637c36dc7 25 static const PinMap PinMap_I2S_CK[] = {
p_igmon 0:ad6637c36dc7 26 {PB_10, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
p_igmon 0:ad6637c36dc7 27 {PB_13, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
p_igmon 0:ad6637c36dc7 28 // {PD_3, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
p_igmon 0:ad6637c36dc7 29 // {PC_10, SPI_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
p_igmon 0:ad6637c36dc7 30 {NC, NC, 0}
p_igmon 0:ad6637c36dc7 31 };
p_igmon 0:ad6637c36dc7 32
p_igmon 0:ad6637c36dc7 33 static const PinMap PinMap_I2S_WS[] = {
p_igmon 0:ad6637c36dc7 34 {PB_12, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
p_igmon 0:ad6637c36dc7 35 {PB_9, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
p_igmon 0:ad6637c36dc7 36 // {PA_15, SPI_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
p_igmon 0:ad6637c36dc7 37 {NC, NC, 0}
p_igmon 0:ad6637c36dc7 38 };
p_igmon 0:ad6637c36dc7 39
p_igmon 0:ad6637c36dc7 40 static const PinMap PinMap_I2S_SD[] = {
p_igmon 0:ad6637c36dc7 41 {PC_3, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
p_igmon 0:ad6637c36dc7 42 {PB_15, SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
p_igmon 0:ad6637c36dc7 43 // {PC_12, SPI_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
p_igmon 0:ad6637c36dc7 44 // {PD_6, SPI_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI3)},
p_igmon 0:ad6637c36dc7 45 {NC, NC, 0}
p_igmon 0:ad6637c36dc7 46 };
p_igmon 0:ad6637c36dc7 47
p_igmon 0:ad6637c36dc7 48
p_igmon 0:ad6637c36dc7 49
p_igmon 0:ad6637c36dc7 50 void HAL_I2S_TxCpltCallback(I2S_HandleTypeDef *hi2s)
p_igmon 0:ad6637c36dc7 51 {
p_igmon 0:ad6637c36dc7 52 if(hi2s->Instance == I2S2)
p_igmon 0:ad6637c36dc7 53 {
p_igmon 0:ad6637c36dc7 54 BufferOffset = DMA_FullComplete;
p_igmon 0:ad6637c36dc7 55 HAL_I2S_Transmit_DMA(&hi2s2, (uint16_t*)&DMA_Buffer[0], DMA_BUFFERSIZE);
p_igmon 0:ad6637c36dc7 56 }
p_igmon 0:ad6637c36dc7 57 }
p_igmon 0:ad6637c36dc7 58
p_igmon 0:ad6637c36dc7 59 void HAL_I2S_TxHalfCpltCallback(I2S_HandleTypeDef *hi2s)
p_igmon 0:ad6637c36dc7 60 {
p_igmon 0:ad6637c36dc7 61 if(hi2s->Instance == I2S2) BufferOffset = DMA_HalfComplete;
p_igmon 0:ad6637c36dc7 62 }
p_igmon 0:ad6637c36dc7 63
p_igmon 0:ad6637c36dc7 64
p_igmon 0:ad6637c36dc7 65
p_igmon 0:ad6637c36dc7 66 void init_dmabuffer(void){
p_igmon 0:ad6637c36dc7 67 int16_t *ptr0 = (int16_t*)&DMA_Buffer[0];
p_igmon 0:ad6637c36dc7 68 for (int i =0;i < DMA_BUFFERSIZE/2 ;i++){
p_igmon 0:ad6637c36dc7 69 *ptr0++ = 0;// Lch
p_igmon 0:ad6637c36dc7 70 *ptr0++ = 0;// Rch
p_igmon 0:ad6637c36dc7 71 }
p_igmon 0:ad6637c36dc7 72 }
p_igmon 0:ad6637c36dc7 73
p_igmon 0:ad6637c36dc7 74
p_igmon 0:ad6637c36dc7 75 void i2s_dma_init(void) {
p_igmon 0:ad6637c36dc7 76 pinmap_pinout(PC_6, PinMap_I2S_MCK);
p_igmon 0:ad6637c36dc7 77 pinmap_pinout(PB_13, PinMap_I2S_CK);
p_igmon 0:ad6637c36dc7 78 pinmap_pinout(PB_12, PinMap_I2S_WS);
p_igmon 0:ad6637c36dc7 79 pinmap_pinout(PB_15, PinMap_I2S_SD);
p_igmon 0:ad6637c36dc7 80
p_igmon 0:ad6637c36dc7 81 pin_mode(PC_6, PullUp);
p_igmon 0:ad6637c36dc7 82 pin_mode(PB_13, PullUp);
p_igmon 0:ad6637c36dc7 83 pin_mode(PB_12, PullUp);
p_igmon 0:ad6637c36dc7 84 pin_mode(PB_15, PullUp);
p_igmon 0:ad6637c36dc7 85
p_igmon 0:ad6637c36dc7 86 init_dmabuffer();
p_igmon 0:ad6637c36dc7 87
p_igmon 0:ad6637c36dc7 88 HAL_I2S_Transmit_DMA(&hi2s2, (uint16_t *)&DMA_Buffer[0],DMA_BUFFERSIZE / 2);
p_igmon 0:ad6637c36dc7 89 /*
p_igmon 0:ad6637c36dc7 90 pc.printf("DMA CR =%4x \n\r" ,DMA1_Stream4->CR);
p_igmon 0:ad6637c36dc7 91 pc.printf("DMA FCR =%4x \n\r" ,DMA1_Stream4->FCR);
p_igmon 0:ad6637c36dc7 92
p_igmon 0:ad6637c36dc7 93 pc.printf("DMA M0AR =%4x M1AR =%4x PAR = %4x \n\r" ,DMA1_Stream4->M0AR ,DMA1_Stream4->M1AR ,DMA1_Stream4->PAR);
p_igmon 0:ad6637c36dc7 94 pc.printf("I2S CR2 = %4x \n\r" ,SPI2->CR2);
p_igmon 0:ad6637c36dc7 95 pc.printf("I2S SR = %4x \n\r" ,SPI2->SR);
p_igmon 0:ad6637c36dc7 96 pc.printf("I2S I2SCFGR = %4x \n\r" ,SPI2->I2SCFGR);
p_igmon 0:ad6637c36dc7 97 pc.printf("I2S I2SPR = %4x \n\r" ,SPI2->I2SPR);
p_igmon 0:ad6637c36dc7 98 pc.printf("RCC->PLLI2SCFGR = %4x \n\r" ,RCC->PLLI2SCFGR);
p_igmon 0:ad6637c36dc7 99 */
p_igmon 0:ad6637c36dc7 100
p_igmon 0:ad6637c36dc7 101 // HAL_RCC_MCOConfig(uint32_t RCC_MCO2, RCC_MCO2SOURCE_PLLI2SCLK, RCC_MCODIV_5);
p_igmon 0:ad6637c36dc7 102 }
p_igmon 0:ad6637c36dc7 103
p_igmon 0:ad6637c36dc7 104
p_igmon 0:ad6637c36dc7 105
p_igmon 0:ad6637c36dc7 106
p_igmon 0:ad6637c36dc7 107