R&J / Mbed OS 487_Laboratory_1

lab 1 code

Dependencies:   CMSIS-DSP_for_STM32F746G BSP_DISCO_F746NG

main.cpp@6:e689075b04ed, 2019-12-28 (annotated)

Committer:
bmazzeo
Date:
Sat Dec 28 18:50:08 2019 +0000
Revision:
6:e689075b04ed
Parent:
5:66c230f74325
Child:
7:e1dfd64eba81
First working version with graphics and some display of audio numbers.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
adustm 0:da04816fb411 1 #include "mbed.h"
Jerome Coutant 5:66c230f74325 2 #include "stm32746g_discovery_audio.h"
Jerome Coutant 5:66c230f74325 3 #include "stm32746g_discovery_sdram.h"
bmazzeo 6:e689075b04ed 4 #include "stm32746g_discovery_lcd.h"
adustm 0:da04816fb411 5
Jerome Coutant 5:66c230f74325 6 typedef enum {
adustm 0:da04816fb411 7 BUFFER_OFFSET_NONE = 0,
adustm 0:da04816fb411 8 BUFFER_OFFSET_HALF = 1,
adustm 0:da04816fb411 9 BUFFER_OFFSET_FULL = 2,
Jerome Coutant 5:66c230f74325 10 } BUFFER_StateTypeDef;
Jerome Coutant 5:66c230f74325 11
adustm 0:da04816fb411 12
bmazzeo 6:e689075b04ed 13 // #define AUDIO_BLOCK_SIZE ((uint32_t)512)
bmazzeo 6:e689075b04ed 14 #define AUDIO_BLOCK_SIZE ((uint32_t)256)
bmazzeo 6:e689075b04ed 15
bmazzeo 6:e689075b04ed 16 #define SDRAM_DEVICE_ADDR_AUDIO_MEM ((uint32_t)0xC00A0000)
bmazzeo 6:e689075b04ed 17 #define AUDIO_BUFFER_IN SDRAM_DEVICE_ADDR_AUDIO_MEM
Jerome Coutant 5:66c230f74325 18 #define AUDIO_BUFFER_OUT (AUDIO_BUFFER_IN + (AUDIO_BLOCK_SIZE * 2))
Jerome Coutant 5:66c230f74325 19
bmazzeo 6:e689075b04ed 20 #define OSC_START_X_POS 10
bmazzeo 6:e689075b04ed 21 #define OSC_LINE_SIZE 256
bmazzeo 6:e689075b04ed 22 #define L_CHANNEL_Y_POS 120
bmazzeo 6:e689075b04ed 23 #define R_CHANNEL_Y_POS 220
bmazzeo 6:e689075b04ed 24
Jerome Coutant 5:66c230f74325 25 volatile uint32_t audio_rec_buffer_state = BUFFER_OFFSET_NONE;
bmazzeo 6:e689075b04ed 26 static void Draw_Trace(uint16_t Xpos, uint16_t Ypos, uint32_t Mem_start, uint16_t Length);
Jerome Coutant 5:66c230f74325 27
adustm 0:da04816fb411 28 int main()
adustm 0:da04816fb411 29 {
bmazzeo 6:e689075b04ed 30
bmazzeo 6:e689075b04ed 31 BSP_LCD_Init();
bmazzeo 6:e689075b04ed 32 BSP_LCD_LayerDefaultInit(LTDC_ACTIVE_LAYER, LCD_FB_START_ADDRESS);
bmazzeo 6:e689075b04ed 33 BSP_LCD_SelectLayer(LTDC_ACTIVE_LAYER);
bmazzeo 6:e689075b04ed 34
bmazzeo 6:e689075b04ed 35 BSP_LCD_Clear(LCD_COLOR_BLACK);
bmazzeo 6:e689075b04ed 36 BSP_LCD_SetFont(&LCD_DEFAULT_FONT);
bmazzeo 6:e689075b04ed 37
bmazzeo 6:e689075b04ed 38
bmazzeo 6:e689075b04ed 39 BSP_LCD_SetBackColor(LCD_COLOR_BLACK);
bmazzeo 6:e689075b04ed 40 BSP_LCD_SetTextColor(LCD_COLOR_ORANGE);
bmazzeo 6:e689075b04ed 41 BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"487 Audio Loopback Test Code", LEFT_MODE);
bmazzeo 6:e689075b04ed 42
Jerome Coutant 5:66c230f74325 43 printf("\n\nAUDIO LOOPBACK EXAMPLE START:\n");
Jerome Coutant 5:66c230f74325 44
Jerome Coutant 5:66c230f74325 45 BSP_AUDIO_IN_OUT_Init(INPUT_DEVICE_DIGITAL_MICROPHONE_2, OUTPUT_DEVICE_HEADPHONE, DEFAULT_AUDIO_IN_FREQ, DEFAULT_AUDIO_IN_BIT_RESOLUTION, DEFAULT_AUDIO_IN_CHANNEL_NBR);
Jerome Coutant 5:66c230f74325 46 printf("AUDIO loop from digital micro (U20 & U21 components on board) to headphone (CN10 jack connector)\n");
Jerome Coutant 5:66c230f74325 47
bmazzeo 6:e689075b04ed 48 BSP_LCD_DisplayStringAt(10, 20, (uint8_t *)"SDRAM Initialization", LEFT_MODE);
bmazzeo 6:e689075b04ed 49
adustm 0:da04816fb411 50
adustm 0:da04816fb411 51 /* Initialize SDRAM buffers */
Jerome Coutant 5:66c230f74325 52 BSP_SDRAM_Init();
Jerome Coutant 5:66c230f74325 53 memset((uint16_t *)AUDIO_BUFFER_IN, 0, AUDIO_BLOCK_SIZE * 2);
Jerome Coutant 5:66c230f74325 54 memset((uint16_t *)AUDIO_BUFFER_OUT, 0, AUDIO_BLOCK_SIZE * 2);
Jerome Coutant 5:66c230f74325 55 printf("SDRAM init done\n");
Jerome Coutant 5:66c230f74325 56
adustm 0:da04816fb411 57 audio_rec_buffer_state = BUFFER_OFFSET_NONE;
adustm 0:da04816fb411 58
adustm 0:da04816fb411 59 /* Start Recording */
Jerome Coutant 5:66c230f74325 60 if (BSP_AUDIO_IN_Record((uint16_t *)AUDIO_BUFFER_IN, AUDIO_BLOCK_SIZE) != AUDIO_OK) {
Jerome Coutant 5:66c230f74325 61 printf("BSP_AUDIO_IN_Record error\n");
Jerome Coutant 5:66c230f74325 62 }
adustm 0:da04816fb411 63
adustm 0:da04816fb411 64 /* Start Playback */
Jerome Coutant 5:66c230f74325 65 BSP_AUDIO_OUT_SetAudioFrameSlot(CODEC_AUDIOFRAME_SLOT_02);
Jerome Coutant 5:66c230f74325 66 if (BSP_AUDIO_OUT_Play((uint16_t *)AUDIO_BUFFER_OUT, AUDIO_BLOCK_SIZE * 2) != AUDIO_OK) {
Jerome Coutant 5:66c230f74325 67 printf("BSP_AUDIO_OUT_Play error\n");
Jerome Coutant 5:66c230f74325 68 }
adustm 0:da04816fb411 69
bmazzeo 6:e689075b04ed 70
bmazzeo 6:e689075b04ed 71 BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
bmazzeo 6:e689075b04ed 72 uint32_t counter;
bmazzeo 6:e689075b04ed 73 counter = 0;
bmazzeo 6:e689075b04ed 74
bmazzeo 6:e689075b04ed 75 char buf[10];
bmazzeo 6:e689075b04ed 76
adustm 0:da04816fb411 77 while (1) {
bmazzeo 6:e689075b04ed 78 /* First Half */
bmazzeo 6:e689075b04ed 79
adustm 0:da04816fb411 80 /* Wait end of half block recording */
Jerome Coutant 5:66c230f74325 81 while (audio_rec_buffer_state == BUFFER_OFFSET_HALF) {
adustm 0:da04816fb411 82 }
adustm 0:da04816fb411 83 audio_rec_buffer_state = BUFFER_OFFSET_NONE;
Jerome Coutant 5:66c230f74325 84
adustm 0:da04816fb411 85 /* Copy recorded 1st half block */
adustm 0:da04816fb411 86 memcpy((uint16_t *)(AUDIO_BUFFER_OUT), (uint16_t *)(AUDIO_BUFFER_IN), AUDIO_BLOCK_SIZE);
Jerome Coutant 5:66c230f74325 87
bmazzeo 6:e689075b04ed 88 /* Second Half */
bmazzeo 6:e689075b04ed 89
adustm 0:da04816fb411 90 /* Wait end of one block recording */
Jerome Coutant 5:66c230f74325 91 while (audio_rec_buffer_state == BUFFER_OFFSET_FULL) {
adustm 0:da04816fb411 92 }
adustm 0:da04816fb411 93 audio_rec_buffer_state = BUFFER_OFFSET_NONE;
Jerome Coutant 5:66c230f74325 94
adustm 0:da04816fb411 95 /* Copy recorded 2nd half block */
adustm 0:da04816fb411 96 memcpy((uint16_t *)(AUDIO_BUFFER_OUT + (AUDIO_BLOCK_SIZE)), (uint16_t *)(AUDIO_BUFFER_IN + (AUDIO_BLOCK_SIZE)), AUDIO_BLOCK_SIZE);
bmazzeo 6:e689075b04ed 97
bmazzeo 6:e689075b04ed 98 BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
bmazzeo 6:e689075b04ed 99 BSP_LCD_DrawHLine(OSC_START_X_POS, L_CHANNEL_Y_POS, OSC_LINE_SIZE);
bmazzeo 6:e689075b04ed 100 BSP_LCD_DrawHLine(OSC_START_X_POS, R_CHANNEL_Y_POS, OSC_LINE_SIZE);
bmazzeo 6:e689075b04ed 101
bmazzeo 6:e689075b04ed 102 Draw_Trace(OSC_START_X_POS, L_CHANNEL_Y_POS, AUDIO_BUFFER_OUT, 256);
bmazzeo 6:e689075b04ed 103
bmazzeo 6:e689075b04ed 104 counter++;
bmazzeo 6:e689075b04ed 105 sprintf(buf, "%d", counter);
bmazzeo 6:e689075b04ed 106 BSP_LCD_SetTextColor(LCD_COLOR_RED);
bmazzeo 6:e689075b04ed 107 BSP_LCD_DisplayStringAt(0, 40, (uint8_t *) buf, LEFT_MODE);
adustm 0:da04816fb411 108 }
adustm 0:da04816fb411 109 }
Jerome Coutant 5:66c230f74325 110
Jerome Coutant 5:66c230f74325 111
bmazzeo 6:e689075b04ed 112 /**
bmazzeo 6:e689075b04ed 113 * @brief Draws a trace of the data line.
bmazzeo 6:e689075b04ed 114 * @param Xpos: X position
bmazzeo 6:e689075b04ed 115 * @param Ypos: Y position
bmazzeo 6:e689075b04ed 116 * @param Mem_start: Start of memory location
bmazzeo 6:e689075b04ed 117 * @param Length: length of trace
bmazzeo 6:e689075b04ed 118 * @retval None
bmazzeo 6:e689075b04ed 119 */
bmazzeo 6:e689075b04ed 120 void Draw_Trace(uint16_t Xpos, uint16_t Ypos, uint32_t Mem_start, uint16_t Length)
bmazzeo 6:e689075b04ed 121 {
bmazzeo 6:e689075b04ed 122 uint32_t i;
bmazzeo 6:e689075b04ed 123 int data_value;
bmazzeo 6:e689075b04ed 124 char buf[12];
bmazzeo 6:e689075b04ed 125
bmazzeo 6:e689075b04ed 126 sprintf(buf, "%12d", *((uint32_t*) Mem_start));
bmazzeo 6:e689075b04ed 127 BSP_LCD_DisplayStringAt(0, 60, (uint8_t *) buf, LEFT_MODE);
bmazzeo 6:e689075b04ed 128
bmazzeo 6:e689075b04ed 129 sprintf(buf, "%12d", *((uint32_t*) Mem_start+1));
bmazzeo 6:e689075b04ed 130 BSP_LCD_DisplayStringAt(0, 80, (uint8_t *) buf, LEFT_MODE);
bmazzeo 6:e689075b04ed 131
bmazzeo 6:e689075b04ed 132 sprintf(buf, "%12d", *((uint32_t*) Mem_start+2));
bmazzeo 6:e689075b04ed 133 BSP_LCD_DisplayStringAt(0, 100, (uint8_t *) buf, LEFT_MODE);
bmazzeo 6:e689075b04ed 134 /*
bmazzeo 6:e689075b04ed 135
bmazzeo 6:e689075b04ed 136 for (i=1; i<=Length; i++)
bmazzeo 6:e689075b04ed 137 {
bmazzeo 6:e689075b04ed 138 data_value = *((uint32_t*) (Mem_start + i));
bmazzeo 6:e689075b04ed 139 BSP_LCD_DrawPixel(Xpos + i, int16_t((int) Ypos + data_value), LCD_COLOR_WHITE);
bmazzeo 6:e689075b04ed 140 }
bmazzeo 6:e689075b04ed 141 */
bmazzeo 6:e689075b04ed 142
bmazzeo 6:e689075b04ed 143 }
bmazzeo 6:e689075b04ed 144
bmazzeo 6:e689075b04ed 145 /* Read data value from SDRAM memory */
bmazzeo 6:e689075b04ed 146 // ret = *(__IO uint32_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (4*(Ypos*BSP_LCD_GetXSize() + Xpos)));
bmazzeo 6:e689075b04ed 147
bmazzeo 6:e689075b04ed 148
adustm 0:da04816fb411 149 /*-------------------------------------------------------------------------------------
adustm 0:da04816fb411 150 Callbacks implementation:
adustm 0:da04816fb411 151 the callbacks API are defined __weak in the stm32746g_discovery_audio.c file
adustm 0:da04816fb411 152 and their implementation should be done in the user code if they are needed.
adustm 0:da04816fb411 153 Below some examples of callback implementations.
adustm 0:da04816fb411 154 -------------------------------------------------------------------------------------*/
adustm 0:da04816fb411 155 /**
adustm 0:da04816fb411 156 * @brief Manages the DMA Transfer complete interrupt.
adustm 0:da04816fb411 157 * @param None
adustm 0:da04816fb411 158 * @retval None
adustm 0:da04816fb411 159 */
adustm 0:da04816fb411 160 void BSP_AUDIO_IN_TransferComplete_CallBack(void)
adustm 0:da04816fb411 161 {
Jerome Coutant 5:66c230f74325 162 audio_rec_buffer_state = BUFFER_OFFSET_FULL;
adustm 0:da04816fb411 163 }
adustm 0:da04816fb411 164
adustm 0:da04816fb411 165 /**
adustm 0:da04816fb411 166 * @brief Manages the DMA Half Transfer complete interrupt.
adustm 0:da04816fb411 167 * @param None
adustm 0:da04816fb411 168 * @retval None
adustm 0:da04816fb411 169 */
adustm 0:da04816fb411 170 void BSP_AUDIO_IN_HalfTransfer_CallBack(void)
adustm 0:da04816fb411 171 {
Jerome Coutant 5:66c230f74325 172 audio_rec_buffer_state = BUFFER_OFFSET_HALF;
adustm 0:da04816fb411 173 }
adustm 0:da04816fb411 174
Jerome Coutant 5:66c230f74325 175 /**
Jerome Coutant 5:66c230f74325 176 * @brief Audio IN Error callback function.
Jerome Coutant 5:66c230f74325 177 * @param None
Jerome Coutant 5:66c230f74325 178 * @retval None
Jerome Coutant 5:66c230f74325 179 */
Jerome Coutant 5:66c230f74325 180 void BSP_AUDIO_IN_Error_CallBack(void)
adustm 0:da04816fb411 181 {
Jerome Coutant 5:66c230f74325 182 printf("BSP_AUDIO_IN_Error_CallBack\n");
adustm 0:da04816fb411 183 }