mirror of
https://github.com/sle118/squeezelite-esp32.git
synced 2025-12-06 11:36:59 +03:00
111 lines
3.4 KiB
C
111 lines
3.4 KiB
C
/*
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* Squeezelite for esp32
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*
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* (c) Sebastien 2019
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* Philippe G. 2019, philippe_44@outlook.com
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*
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* This software is released under the MIT License.
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* https://opensource.org/licenses/MIT
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*
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* (c) C. Rohs 2020 added support for the tas5713 (eg. HiFiBerry AMP+)
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*/
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "driver/i2s.h"
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#include "driver/i2c.h"
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#include "driver/gpio.h"
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#include "esp_log.h"
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#include "adac.h"
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#define ARRAY_SIZE(array) (sizeof(array) / sizeof(*array))
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#define TAS5713 (0x36 >> 1) /* i2c address of TAS5713 */
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// TAS5713 I2C-bus register addresses
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#define TAS5713_CLOCK_CTRL 0x00
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#define TAS5713_DEVICE_ID 0x01
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#define TAS5713_ERROR_STATUS 0x02
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#define TAS5713_SYSTEM_CTRL1 0x03
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#define TAS5713_SERIAL_DATA_INTERFACE 0x04
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#define TAS5713_SYSTEM_CTRL2 0x05
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#define TAS5713_SOFT_MUTE 0x06
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#define TAS5713_VOL_MASTER 0x07
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#define TAS5713_VOL_CH1 0x08
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#define TAS5713_VOL_CH2 0x09
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#define TAS5713_VOL_HEADPHONE 0x0A
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#define TAS5713_OSC_TRIM 0x1B
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static const char TAG[] = "TAS5713";
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static bool init(char *config, int i2c_port_num, i2s_config_t *i2s_config, bool *mck);
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static void speaker(bool active) { };
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static void headset(bool active) { } ;
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static bool volume(unsigned left, unsigned right);
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static void power(adac_power_e mode) { };
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const struct adac_s dac_tas5713 = {"TAS5713", init, adac_deinit, power, speaker, headset, volume};
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struct tas5713_cmd_s {
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uint8_t reg;
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uint8_t value;
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};
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// matching orders
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typedef enum {
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TAS57_ACTIVE = 0,
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TAS57_STANDBY,
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TAS57_DOWN,
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TAS57_ANALOGUE_OFF,
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TAS57_ANALOGUE_ON,
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TAS57_VOLUME
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} dac_cmd_e;
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/****************************************************************************************
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* init
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*/
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static bool init(char *config, int i2c_port, i2s_config_t *i2s_config, bool *mck) {
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/* find if there is a tas5713 attached. Reg 0 should read non-zero but not 255 if so */
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adac_init(config, i2c_port);
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if (adac_read_byte(TAS5713, 0x00) == 255) {
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ESP_LOGW(TAG, "No TAS5713 detected");
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adac_deinit();
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return 0;
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}
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ESP_LOGI(TAG, "TAS5713 found");
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/* do the init sequence */
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esp_err_t res = adac_write_byte(TAS5713, TAS5713_OSC_TRIM, 0x00); /* a delay is required after this */
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vTaskDelay(50 / portTICK_PERIOD_MS);
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res |= adac_write_byte(TAS5713, TAS5713_SERIAL_DATA_INTERFACE, 0x03); /* I2S LJ 16 bit */
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res |= adac_write_byte(TAS5713, TAS5713_SYSTEM_CTRL2, 0x00); /* exit all channel shutdown */
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res |= adac_write_byte(TAS5713, TAS5713_SOFT_MUTE, 0x00); /* unmute */
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res |= adac_write_byte(TAS5713, TAS5713_VOL_MASTER, 0x20);
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res |= adac_write_byte(TAS5713, TAS5713_VOL_CH1, 0x30);
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res |= adac_write_byte(TAS5713, TAS5713_VOL_CH2, 0x30);
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res |= adac_write_byte(TAS5713, TAS5713_VOL_HEADPHONE, 0xFF);
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/* The tas5713 typically has the mclk connected to the sclk. In this
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configuration, mclk must be a multiple of the sclk. The lowest workable
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multiple is 64x. To achieve this, 32 bits per channel on must be sent
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over I2S. Reconfigure the I2S for that here, and expand the I2S stream
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when it is sent */
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i2s_config->bits_per_sample = 32;
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if (res != ESP_OK) {
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ESP_LOGE(TAG, "could not intialize TAS5713 %d", res);
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return false;
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}
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return true;
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}
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/****************************************************************************************
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* change volume
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*/
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static bool volume(unsigned left, unsigned right) {
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return false;
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}
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