mirror of
https://github.com/sle118/squeezelite-esp32.git
synced 2025-12-08 04:27:12 +03:00
246 lines
6.8 KiB
C
246 lines
6.8 KiB
C
/*
|
|
* Squeezelite for esp32
|
|
*
|
|
* (c) Sebastien 2019
|
|
* Philippe G. 2019, philippe_44@outlook.com
|
|
*
|
|
* This software is released under the MIT License.
|
|
* https://opensource.org/licenses/MIT
|
|
*
|
|
*/
|
|
|
|
#include "squeezelite.h"
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "driver/i2s.h"
|
|
#include "driver/i2c.h"
|
|
#include "driver/gpio.h"
|
|
#include "adac.h"
|
|
|
|
// this is the only hard-wired thing
|
|
#define VOLUME_GPIO 14
|
|
|
|
#define TAS575x 0x98
|
|
#define TAS578x 0x90
|
|
|
|
static bool init(int i2c_port_num, int i2s_num, i2s_config_t *config);
|
|
static void deinit(void);
|
|
static void speaker(bool active);
|
|
static void headset(bool active);
|
|
static void volume(unsigned left, unsigned right);
|
|
static void power(adac_power_e mode);
|
|
|
|
struct adac_s dac_tas57xx = { init, deinit, power, speaker, headset, volume };
|
|
|
|
struct tas57xx_cmd_s {
|
|
uint8_t reg;
|
|
uint8_t value;
|
|
};
|
|
|
|
static const struct tas57xx_cmd_s tas57xx_init_sequence[] = {
|
|
{ 0x00, 0x00 }, // select page 0
|
|
{ 0x02, 0x10 }, // standby
|
|
{ 0x0d, 0x10 }, // use SCK for PLL
|
|
{ 0x25, 0x08 }, // ignore SCK halt
|
|
{ 0x08, 0x10 }, // Mute control enable (from TAS5780)
|
|
{ 0x54, 0x02 }, // Mute output control (from TAS5780)
|
|
{ 0x02, 0x00 }, // restart
|
|
{ 0xff, 0xff } // end of table
|
|
};
|
|
|
|
// matching orders
|
|
typedef enum { TAS57_ACTIVE = 0, TAS57_STANDBY, TAS57_DOWN, TAS57_ANALOGUE_OFF, TAS57_ANALOGUE_ON, TAS57_VOLUME } dac_cmd_e;
|
|
|
|
static const struct tas57xx_cmd_s tas57xx_cmd[] = {
|
|
{ 0x02, 0x00 }, // TAS57_ACTIVE
|
|
{ 0x02, 0x10 }, // TAS57_STANDBY
|
|
{ 0x02, 0x01 }, // TAS57_DOWN
|
|
{ 0x56, 0x10 }, // TAS57_ANALOGUE_OFF
|
|
{ 0x56, 0x00 }, // TAS57_ANALOGUE_ON
|
|
};
|
|
|
|
static log_level loglevel = lINFO;
|
|
static u8_t tas57_addr;
|
|
static int i2c_port;
|
|
|
|
static void dac_cmd(dac_cmd_e cmd, ...);
|
|
static int tas57_detect(void);
|
|
|
|
/****************************************************************************************
|
|
* init
|
|
*/
|
|
static bool init(int i2c_port_num, int i2s_num, i2s_config_t *i2s_config) {
|
|
i2c_port = i2c_port_num;
|
|
|
|
// configure i2c
|
|
i2c_config_t i2c_config = {
|
|
.mode = I2C_MODE_MASTER,
|
|
.sda_io_num = 27,
|
|
.sda_pullup_en = GPIO_PULLUP_ENABLE,
|
|
.scl_io_num = 26,
|
|
.scl_pullup_en = GPIO_PULLUP_ENABLE,
|
|
.master.clk_speed = 100000,
|
|
};
|
|
|
|
i2c_param_config(i2c_port, &i2c_config);
|
|
i2c_driver_install(i2c_port, I2C_MODE_MASTER, false, false, false);
|
|
|
|
// find which TAS we are using (if any)
|
|
tas57_addr = tas57_detect();
|
|
|
|
if (!tas57_addr) {
|
|
LOG_WARN("No TAS57xx detected");
|
|
i2c_driver_delete(i2c_port);
|
|
return 0;
|
|
}
|
|
|
|
LOG_INFO("TAS57xx DAC using I2C sda:%u, scl:%u", i2c_config.sda_io_num, i2c_config.scl_io_num);
|
|
|
|
i2c_cmd_handle_t i2c_cmd = i2c_cmd_link_create();
|
|
|
|
for (int i = 0; tas57xx_init_sequence[i].reg != 0xff; i++) {
|
|
i2c_master_start(i2c_cmd);
|
|
i2c_master_write_byte(i2c_cmd, tas57_addr | I2C_MASTER_WRITE, I2C_MASTER_NACK);
|
|
i2c_master_write_byte(i2c_cmd, tas57xx_init_sequence[i].reg, I2C_MASTER_NACK);
|
|
i2c_master_write_byte(i2c_cmd, tas57xx_init_sequence[i].value, I2C_MASTER_NACK);
|
|
|
|
LOG_DEBUG("i2c write %x at %u", tas57xx_init_sequence[i].reg, tas57xx_init_sequence[i].value);
|
|
}
|
|
|
|
i2c_master_stop(i2c_cmd);
|
|
esp_err_t res = i2c_master_cmd_begin(i2c_port, i2c_cmd, 500 / portTICK_RATE_MS);
|
|
i2c_cmd_link_delete(i2c_cmd);
|
|
|
|
// configure I2S pins & install driver
|
|
i2s_pin_config_t i2s_pin_config = (i2s_pin_config_t) { .bck_io_num = CONFIG_I2S_BCK_IO, .ws_io_num = CONFIG_I2S_WS_IO,
|
|
.data_out_num = CONFIG_I2S_DO_IO, .data_in_num = CONFIG_I2S_DI_IO,
|
|
};
|
|
res |= i2s_driver_install(i2s_num, i2s_config, 0, NULL);
|
|
res |= i2s_set_pin(i2s_num, &i2s_pin_config);
|
|
LOG_INFO("DAC using I2S bck:%d, ws:%d, do:%d", i2s_pin_config.bck_io_num, i2s_pin_config.ws_io_num, i2s_pin_config.data_out_num);
|
|
|
|
if (res == ESP_OK) {
|
|
// init volume & mute
|
|
gpio_pad_select_gpio(VOLUME_GPIO);
|
|
gpio_set_direction(VOLUME_GPIO, GPIO_MODE_OUTPUT);
|
|
gpio_set_level(VOLUME_GPIO, 0);
|
|
return true;
|
|
} else {
|
|
LOG_ERROR("could not intialize TAS57xx %d", res);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/****************************************************************************************
|
|
* init
|
|
*/
|
|
static void deinit(void) {
|
|
i2c_driver_delete(i2c_port);
|
|
}
|
|
|
|
/****************************************************************************************
|
|
* change volume
|
|
*/
|
|
static void volume(unsigned left, unsigned right) {
|
|
LOG_INFO("TAS57xx volume (L:%u R:%u)", left, right);
|
|
gpio_set_level(VOLUME_GPIO, left || right);
|
|
}
|
|
|
|
/****************************************************************************************
|
|
* power
|
|
*/
|
|
static void power(adac_power_e mode) {
|
|
switch(mode) {
|
|
case ADAC_STANDBY:
|
|
dac_cmd(TAS57_STANDBY);
|
|
break;
|
|
case ADAC_ON:
|
|
dac_cmd(TAS57_ACTIVE);
|
|
break;
|
|
case ADAC_OFF:
|
|
dac_cmd(TAS57_DOWN);
|
|
break;
|
|
default:
|
|
LOG_WARN("unknown DAC command");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/****************************************************************************************
|
|
* speaker
|
|
*/
|
|
static void speaker(bool active) {
|
|
if (active) dac_cmd(TAS57_ANALOGUE_ON);
|
|
else dac_cmd(TAS57_ANALOGUE_OFF);
|
|
}
|
|
|
|
/****************************************************************************************
|
|
* headset
|
|
*/
|
|
static void headset(bool active) {
|
|
}
|
|
|
|
/****************************************************************************************
|
|
* DAC specific commands
|
|
*/
|
|
void dac_cmd(dac_cmd_e cmd, ...) {
|
|
va_list args;
|
|
esp_err_t ret = ESP_OK;
|
|
|
|
va_start(args, cmd);
|
|
i2c_cmd_handle_t i2c_cmd = i2c_cmd_link_create();
|
|
|
|
switch(cmd) {
|
|
case TAS57_VOLUME:
|
|
LOG_ERROR("DAC volume not handled yet");
|
|
break;
|
|
default:
|
|
i2c_master_start(i2c_cmd);
|
|
i2c_master_write_byte(i2c_cmd, tas57_addr | I2C_MASTER_WRITE, I2C_MASTER_NACK);
|
|
i2c_master_write_byte(i2c_cmd, tas57xx_cmd[cmd].reg, I2C_MASTER_NACK);
|
|
i2c_master_write_byte(i2c_cmd, tas57xx_cmd[cmd].value, I2C_MASTER_NACK);
|
|
i2c_master_stop(i2c_cmd);
|
|
ret = i2c_master_cmd_begin(i2c_port, i2c_cmd, 50 / portTICK_RATE_MS);
|
|
}
|
|
|
|
i2c_cmd_link_delete(i2c_cmd);
|
|
|
|
if (ret != ESP_OK) {
|
|
LOG_ERROR("could not intialize TAS57xx %d", ret);
|
|
}
|
|
|
|
va_end(args);
|
|
}
|
|
|
|
/****************************************************************************************
|
|
* TAS57 detection
|
|
*/
|
|
static int tas57_detect(void) {
|
|
u8_t data, addr[] = {TAS578x, TAS575x};
|
|
int ret;
|
|
|
|
for (int i = 0; i < sizeof(addr); i++) {
|
|
i2c_cmd_handle_t i2c_cmd = i2c_cmd_link_create();
|
|
|
|
i2c_master_start(i2c_cmd);
|
|
i2c_master_write_byte(i2c_cmd, addr[i] | I2C_MASTER_WRITE, I2C_MASTER_NACK);
|
|
i2c_master_write_byte(i2c_cmd, 00, I2C_MASTER_NACK);
|
|
|
|
i2c_master_start(i2c_cmd);
|
|
i2c_master_write_byte(i2c_cmd, addr[i] | I2C_MASTER_READ, I2C_MASTER_NACK);
|
|
i2c_master_read_byte(i2c_cmd, &data, I2C_MASTER_NACK);
|
|
|
|
i2c_master_stop(i2c_cmd);
|
|
ret = i2c_master_cmd_begin(i2c_port, i2c_cmd, 50 / portTICK_RATE_MS);
|
|
i2c_cmd_link_delete(i2c_cmd);
|
|
|
|
if (ret == ESP_OK) {
|
|
LOG_INFO("Detected TAS @0x%x", addr[i]);
|
|
return addr[i];
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|