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auto-detect DAC

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This commit is contained in:
philippe44
2020-02-09 14:22:35 -08:00
parent 90d52dabaf
commit c4b0168370
7 changed files with 77 additions and 36 deletions
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19
components/squeezelite/a1s/ac101.c
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@@ -73,7 +73,6 @@ static int i2c_port;
static bool init(int i2c_port_num, int i2s_num, i2s_config_t *i2s_config) {
esp_err_t res;
ESP_LOGI(TAG, "Initializing AC101");
i2c_port = i2c_port_num;
// configure i2c
@@ -88,17 +87,21 @@ static bool init(int i2c_port_num, int i2s_num, i2s_config_t *i2s_config) {
i2c_param_config(i2c_port, &i2c_config);
i2c_driver_install(i2c_port, I2C_MODE_MASTER, false, false, false);
ESP_LOGI(TAG, "DAC using I2C sda:%u, scl:%u", i2c_config.sda_io_num, i2c_config.scl_io_num);
res = i2c_read_reg(CHIP_AUDIO_RS);
if (!res) {
ESP_LOGW(TAG, "No AC101 detected");
i2c_driver_delete(i2c_port);
return 0;
}
ESP_LOGI(TAG, "AC101 DAC using I2C sda:%u, scl:%u", i2c_config.sda_io_num, i2c_config.scl_io_num);
res = i2c_write_reg(CHIP_AUDIO_RS, 0x123);
// huh?
vTaskDelay(100 / portTICK_PERIOD_MS);
vTaskDelay(100 / portTICK_PERIOD_MS);
if (ESP_OK != res) {
ESP_LOGE(TAG, "AC101 reset failed! %d", res);
return false;
}
// enable the PLL from BCLK source
i2c_write_reg(PLL_CTRL1, BIN(0000,0001,0100,1111)); // F=1,M=1,PLL,INT=31 (medium)
i2c_write_reg(PLL_CTRL2, BIN(1000,0110,0000,0000)); // PLL, F=96,N_i=1024-96,F=0,N_f=0*0.2;

2
components/squeezelite/external/dac_external.c vendored
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@@ -54,7 +54,7 @@ static bool init(int i2c_port_num, int i2s_num, i2s_config_t *config) {
i2s_driver_install(i2s_num, config, 0, NULL);
i2s_set_pin(i2s_num, &i2s_pin_config);
ESP_LOGI(TAG, "DAC using I2S bck:%u, ws:%u, do:%u", i2s_pin_config.bck_io_num, i2s_pin_config.ws_io_num, i2s_pin_config.data_out_num);
ESP_LOGI(TAG, "External DAC using I2S bck:%u, ws:%u, do:%u", i2s_pin_config.bck_io_num, i2s_pin_config.ws_io_num, i2s_pin_config.data_out_num);
return true;
} else {

12
components/squeezelite/output_i2s.c
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@@ -242,9 +242,6 @@ void output_init_i2s(log_level level, char *device, unsigned output_buf_size, ch
gpio_set_level(CONFIG_SPDIF_DO_IO, 0);
#endif
// not very pretty ...
adac = &ADAC;
i2s_config.sample_rate = output.current_sample_rate;
i2s_config.bits_per_sample = bytes_per_frame * 8 / 2;
// Counted in frames (but i2s allocates a buffer <= 4092 bytes)
@@ -253,8 +250,13 @@ void output_init_i2s(log_level level, char *device, unsigned output_buf_size, ch
dma_buf_frames = DMA_BUF_COUNT * DMA_BUF_LEN;
// finally let DAC driver initialize I2C and I2S
adac->init(I2C_PORT, CONFIG_I2S_NUM, &i2s_config);
}
if (dac_tas57xx.init(I2C_PORT, CONFIG_I2S_NUM, &i2s_config)) adac = &dac_tas57xx;
else if (dac_a1s.init(I2C_PORT, CONFIG_I2S_NUM, &i2s_config)) adac = &dac_a1s;
else {
dac_external.init(I2C_PORT, CONFIG_I2S_NUM, &i2s_config);
adac = &dac_external;
}
}
LOG_INFO("Initializing I2S mode %s with rate: %d, bits per sample: %d, buffer frames: %d, number of buffers: %d ",
spdif ? "S/PDIF" : "normal",

26
components/squeezelite/tas57xx/dac_57xx.c
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@@ -78,15 +78,8 @@ static int tas57_detect(void);
* init
*/
static bool init(int i2c_port_num, int i2s_num, i2s_config_t *i2s_config) {
LOG_INFO("Initializing TAS57xx ");
i2c_port = i2c_port_num;
// init volume & mute
gpio_pad_select_gpio(VOLUME_GPIO);
gpio_set_direction(VOLUME_GPIO, GPIO_MODE_OUTPUT);
gpio_set_level(VOLUME_GPIO, 0);
// configure i2c
i2c_config_t i2c_config = {
.mode = I2C_MODE_MASTER,
@@ -96,13 +89,26 @@ static bool init(int i2c_port_num, int i2s_num, i2s_config_t *i2s_config) {
.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);
LOG_INFO("DAC using I2C sda:%u, scl:%u", i2c_config.sda_io_num, i2c_config.scl_io_num);
// find which TAS we are using
// 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);
// init volume & mute
gpio_pad_select_gpio(VOLUME_GPIO);
gpio_set_direction(VOLUME_GPIO, GPIO_MODE_OUTPUT);
gpio_set_level(VOLUME_GPIO, 0);
i2c_cmd_handle_t i2c_cmd = i2c_cmd_link_create();
for (int i = 0; tas57xx_init_sequence[i].reg != 0xff; i++) {