100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
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// Based on https://github.com/mpflaga/Arduino_Library-vs1053_for_SdFat/blob/master/src/vs1053_SdFat.cpp
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#include "player.h"
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#include "spi_master.h"
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Player::Player(SDCard* c) {
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pinMode(XRESET, OUTPUT);
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digitalWrite(XRESET, HIGH);
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pinMode(DREQ, INPUT);
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_init();
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}
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void Player::_reset() {
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digitalWrite(XRESET, LOW);
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delay(50);
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digitalWrite(XRESET, HIGH);
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delay(50);
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}
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void Player::_init() {
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SPI.setClockDivider(SPI_CLOCK_DIV16);
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_reset();
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uint16_t result;
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for(uint8_t x=0; x<255; x++) {
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result = _read_register(SCI_MODE, 0, x);
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if (result != 0) Serial.printf("Try %3d: 0x%04X\n", x, result);
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}
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delay(10);
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/*_read_register(SCI_MODE, SPI_CLOCK_DIV16); // First read fails for some unknown reason...
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_read_register(SCI_MODE, SPI_CLOCK_DIV16);
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_read_register(SCI_STATUS, SPI_CLOCK_DIV16);
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_read_register(SCI_STATUS, SPI_CLOCK_DIV16);
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_read_register(SCI_MODE, SPI_CLOCK_DIV16);
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_read_register(SCI_MODE, SPI_CLOCK_DIV16);
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uint16_t response = _read_register(SCI_MODE, SPI_CLOCK_DIV16);
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if (response != 0x4800) {
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Serial.printf("Initialization failed. SCI_MODE was: 0x%04X. Expected: 0x4800\n", response);
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return;
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}*/
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/*_write_register(SCI_CLOCKF, 0x6000); // Set multiplier to 3x
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delay(10);
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response = _read_register(SCI_CLOCKF);
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if (response != 0x6000) {
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Serial.printf("Initialization failed. SCI_CLOCKF was: 0x%04X. Expected: 0x6000\n", response);
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return;
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}*/
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//Serial.println(result, HEX);
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}
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inline void Player::_wait() {
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delayMicroseconds(100);
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//Serial.print("Waiting for DREQ...");
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while(!digitalRead(DREQ));
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//Serial.printf(" done (%d cycles).\n", i);
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}
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uint16_t Player::_read_register(uint8_t address, uint32_t spi_speed, uint16_t t) {
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Serial.printf("Try %03d, querying register 0x%02X...", t, address);
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//SPI.setClockDivider(spi_speed);
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if (t & (1<<1)) _wait();
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SPIMaster::enable(PIN_VS1053_XCS);
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if (t & (1<<2)) _wait();
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//_wait();
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SPI.transfer(CMD_READ);
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if (t & (1<<3)) _wait();
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SPI.transfer(address);
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if (t & (1<<4)) _wait();
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uint8_t b1 = SPI.transfer(0xFF);
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if (t & (1<<5)) _wait();
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uint8_t b2 = SPI.transfer(0xFF);
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if (t & (1<<6)) _wait();
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uint16_t result = b1 << 8 | b2;
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Serial.printf("Response: 0x%02X 0x%02X -> 0x%04X\n", b1, b2, result);
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if (t & (1<<7)) delay(10);
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//_wait();
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//SPIMaster::disable();
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return result;
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}
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void Player::_write_register(uint8_t address, uint16_t value, uint32_t spi_speed) {
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Serial.printf("Writing to register 0x%02X...", address);
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SPI.setClockDivider(spi_speed);
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SPIMaster::enable(PIN_VS1053_XCS);
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SPI.transfer(CMD_WRITE);
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SPI.transfer(address);
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SPI.transfer(value >> 8);
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SPI.transfer(value & 0xFF);
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_wait();
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SPIMaster::disable();
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Serial.println(" done.");
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}
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