| 0,0 → 1,222 |
|---|
| #include <msp430.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include "hal_SPI.h" |
| #include "mmc.h" |
| #include "diskio.h" |
| #include "pff.h" |
| #include "player.h" |
| #include "adxl345.h" |
| |
| /** |
| * Takes an initialized DIR and returns the number of sub-dir and files |
| */ |
| FRESULT directory_info(char *path, int *dir_count, int *file_count) { |
| FILINFO finfo; |
| FRESULT result; |
| DIR dir; |
| |
| *dir_count = 0; |
| *file_count = 0; |
| |
| result = pf_opendir(&dir, path); |
| if (result == FR_OK) { |
| for (;;) { |
| result = pf_readdir(&dir, &finfo); |
| // Break upon end of list |
| if (result != FR_OK || finfo.fname[0] == 0) break; |
| // Increment the directory or file count |
| if (finfo.fattrib & AM_DIR) { |
| *dir_count = *dir_count + 1; |
| } else { |
| *file_count = *file_count + 1; |
| } |
| } |
| } |
| |
| return result; |
| } |
| |
| static int file_count, dir_count; |
| static char filename[16]; |
| |
| int main(void) { |
| WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer |
| |
| /* --- Set Oscillator Settings (8Mhz) --------------- */ |
| // Set DCO to 5, MOD to 0 |
| DCOCTL = CALDCO_16MHZ; |
| // Set RSEL to 13 |
| BCSCTL1 = CALBC1_16MHZ; |
| // MCLK = DCO/1, SMCLK = MCLK/1 |
| BCSCTL2 = SELM_0 | DIVM_0 | DIVS_0; |
| // LFXT1 = VLOCLK, 1pF termination |
| BCSCTL3 = LFXT1S_2 | XCAP_0; |
| // Disable oscillator fault interrupt |
| IE1 &= ~OFIE; |
| /* -------------------------------------------------- */ |
| |
| /* --- Initialize I/O Ports ------------------------- */ |
| P2SEL = 0x0; // P2SEL resets to 0xC0 |
| |
| // SD Chip Select (idle high) |
| MMC_CS_PxOUT |= MMC_CS; |
| MMC_CS_PxDIR |= MMC_CS; |
| |
| // SD Card Detect (input) |
| MMC_CD_PxDIR &= ~MMC_CD; |
| |
| // VS1053 Chip Select (idle high) |
| VS10XX_CS_PxOUT |= VS10XX_CS; |
| VS10XX_CS_PxDIR |= VS10XX_CS; |
| |
| // VS1053 Data/Command Select (idle high) |
| VS10XX_DC_PxOUT |= VS10XX_DC; |
| VS10XX_DC_PxDIR |= VS10XX_DC; |
| |
| // VS1053 DREQ Line (input) |
| VS10XX_DREQ_PxDIR &= ~VS10XX_DREQ; |
| |
| // Accelerometer Chip Select (idle high) |
| ADXL_CS_PxOUT |= ADXL_CS; |
| ADXL_CS_PxDIR |= ADXL_CS; |
| |
| // Accelerometer Interrupt 1 (input) |
| ADXL_INT1_PxDIR &= ~ADXL_INT1; |
| ADXL_INT1_PxIES |= ADXL_INT1; // Interrupt on High -> Low |
| ADXL_INT1_PxIFG &= ~ADXL_INT1; // Clear interrupt flag |
| ADXL_INT1_PxIE |= ADXL_INT1; // Enable interrupt |
| |
| // Accelerometer Interrupt 2 (input) |
| ADXL_INT2_PxDIR &= ~ADXL_INT2; |
| // ADXL_INT2_PxIES |= ADXL_INT2; // Interrupt on High -> Low |
| // ADXL_INT2_PxIFG &= ~ADXL_INT2; // Clear interrupt flag |
| // ADXL_INT2_PxIE |= ADXL_INT2; // Enable interrupt |
| |
| // Reset (idle low) |
| CHIP_RESET_PxOUT &= ~CHIP_RESET; |
| CHIP_RESET_PxDIR |= CHIP_RESET; |
| |
| // Red LED (idle low) |
| LED_RED_PxOUT &= ~LED_RED; |
| LED_RED_PxDIR |= LED_RED; |
| |
| // Green LED (idle low) |
| LED_GREEN_PxOUT &= ~LED_GREEN; |
| LED_GREEN_PxDIR |= LED_GREEN; |
| |
| // Initialize port 3 even though it doesnt exist on the device |
| P3DIR = 0xFF; |
| P3OUT = 0x00; |
| /* -------------------------------------------------- */ |
| |
| unsigned char status = 1; |
| int acc_x, acc_y, acc_z; |
| FATFS fs; |
| FRESULT result = FR_NOT_READY; |
| |
| // Init SPI Module |
| halSPISetup(); |
| |
| // __delay_cycles(32000000); |
| |
| // Attempt the startup procedure four times |
| int i; |
| for (i = 0; i < 4; i++) { |
| |
| // Initialize the accelerometer |
| if (ADXLInit() == 0) { |
| |
| // Sum the accelerometer values to seed the randomizer |
| ADXLRead(&acc_x, &acc_y, &acc_z); |
| srand(acc_x + acc_y + acc_z); |
| |
| // Mount the SD card |
| result = pf_mount(&fs); |
| if (result == FR_OK) { |
| |
| // Acquire the number of subdirectories and files in the root directory |
| result = directory_info("/", &dir_count, &file_count); |
| |
| if (result == FR_OK && file_count > 0) { |
| |
| CHIP_RESET_HIGH(); |
| |
| if (VS1053Init() == 0) { |
| LED_GREEN_HIGH(); |
| __delay_cycles(1000000); |
| LED_GREEN_LOW(); |
| |
| // If everything went well, play the first track |
| status = 0; |
| VS1053PlayFile("track1.mp3"); |
| break; |
| |
| } else { // VS1053Init() |
| continue; |
| } |
| |
| } else { // directory_info |
| continue; |
| } |
| |
| } else { // pf_mount() |
| continue; |
| } |
| |
| } else { // ADXLInit() |
| continue; |
| } |
| } |
| |
| // If everything is ok, enable accelerometer interrupts |
| if (status == 0) { |
| ADXLInitInterrupts(); |
| } else { |
| // Otherwise turn off everything |
| LED_RED_HIGH(); |
| void ADXLStandbyOn(void); |
| } |
| |
| // Turn off all chips except the accelerometer |
| CHIP_RESET_LOW(); |
| _BIS_SR(LPM4_bits + GIE); |
| |
| } |
| |
| #pragma vector=PORT1_VECTOR |
| __interrupt void Port1_Interrupt(void) { |
| |
| if (ADXL_INT1_PxIFG & ADXL_INT1) { |
| LED_GREEN_HIGH(); |
| __delay_cycles(1000000); |
| LED_GREEN_LOW(); |
| |
| // Bring chips out of low-power state |
| CHIP_RESET_HIGH(); |
| VSInitSoftware(); |
| |
| // Play a random file |
| int i = (rand() % file_count) + 1; |
| snprintf(filename, 16, "track%d.mp3", i); |
| VS1053PlayFile(filename); |
| |
| // Return chips to low-power state |
| CHIP_RESET_LOW(); |
| |
| // Clear the interrupt flag |
| ADXL_INT1_PxIFG &= ~ADXL_INT1; |
| } |
| |
| // if (ADXL_INT2_PxIFG & ADXL_INT2) { |
| // LED_RED_HIGH(); |
| // __delay_cycles(2000000); |
| // LED_RED_LOW(); |
| // |
| // // Clear the interrupt flag |
| // ADXL_INT2_PxIFG &= ~ADXL_INT2; |
| // } |
| |
| ADXLClearInterrupts(); |
| } |