mirror of
https://github.com/sle118/squeezelite-esp32.git
synced 2025-12-11 05:57:05 +03:00
426 lines
14 KiB
C
426 lines
14 KiB
C
/*
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* ESPRESSIF MIT License
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*
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* Copyright (c) 2018 <ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD>
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*
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* Permission is hereby granted for use on all ESPRESSIF SYSTEMS products, in which case,
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* it is free of charge, to any person obtaining a copy of this software and associated
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* documentation files (the "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the Software is furnished
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* to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or
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* substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "ac101.h"
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#include <driver/i2c.h>
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#include <driver/i2s.h>
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#include <esp_log.h>
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#include <esp_system.h>
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#include <esp_types.h>
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#include <freertos/FreeRTOS.h>
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#include <freertos/task.h>
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#include <string.h>
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#include "adac.h"
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const static char TAG[] = "AC101";
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#define SPKOUT_EN ((1 << 9) | (1 << 11) | (1 << 7) | (1 << 5))
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#define EAROUT_EN ((1 << 11) | (1 << 12) | (1 << 13))
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#define BIN(a, b, c, d) 0b##a##b##c##d
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#define min(a, b) (((a) < (b)) ? (a) : (b))
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#define max(a, b) (((a) > (b)) ? (a) : (b))
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#define AC_ASSERT(a, format, b, ...) \
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if ((a) != 0) { \
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ESP_LOGE(TAG, format, ##__VA_ARGS__); \
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return b; \
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}
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static bool init(int i2c_port_num, int i2s_num, i2s_config_t* config);
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static void deinit(void);
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static void speaker(bool active);
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static void headset(bool active);
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static void volume(unsigned left, unsigned right);
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static void power(adac_power_e mode);
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struct adac_s dac_a1s = {init, deinit, power, speaker, headset, volume};
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static esp_err_t i2c_write_reg(uint8_t reg, uint16_t val);
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static uint16_t i2c_read_reg(uint8_t reg);
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static void ac101_start(ac_module_t mode);
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static void ac101_stop(void);
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static void ac101_set_earph_volume(uint8_t volume);
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static void ac101_set_spk_volume(uint8_t volume);
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static int ac101_get_spk_volume(void);
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static int i2c_port;
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/****************************************************************************************
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* init
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*/
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static bool init(int i2c_port_num, int i2s_num, i2s_config_t* i2s_config) {
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esp_err_t res = ESP_OK;
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i2c_port = i2c_port_num;
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// configure i2c
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i2c_config_t i2c_config = {
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.mode = I2C_MODE_MASTER,
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.sda_io_num = 33,
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.sda_pullup_en = GPIO_PULLUP_ENABLE,
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.scl_io_num = 32,
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.scl_pullup_en = GPIO_PULLUP_ENABLE,
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.master.clk_speed = 250000,
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};
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i2c_param_config(i2c_port, &i2c_config);
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i2c_driver_install(i2c_port, I2C_MODE_MASTER, false, false, false);
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res = i2c_read_reg(CHIP_AUDIO_RS);
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if (!res) {
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ESP_LOGW(TAG, "No AC101 detected");
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i2c_driver_delete(i2c_port);
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return 0;
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}
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ESP_LOGI(TAG, "AC101 DAC using I2C sda:%u, scl:%u", i2c_config.sda_io_num,
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i2c_config.scl_io_num);
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res = i2c_write_reg(CHIP_AUDIO_RS, 0x123);
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// huh?
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vTaskDelay(100 / portTICK_PERIOD_MS);
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// enable the PLL from BCLK source
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i2c_write_reg(PLL_CTRL1,
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BIN(0000, 0001, 0100, 1111)); // F=1,M=1,PLL,INT=31 (medium)
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i2c_write_reg(PLL_CTRL2, BIN(1000, 0110, 0000,
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0000)); // PLL, F=96,N_i=1024-96,F=0,N_f=0*0.2;
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// i2c_write_reg(PLL_CTRL2, BIN(1000,0011,1100,0000));
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// clocking system
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i2c_write_reg(SYSCLK_CTRL, BIN(1010, 1010, 0000,
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1000)); // PLLCLK, BCLK1, IS1CLK, PLL, SYSCLK
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i2c_write_reg(MOD_CLK_ENA, BIN(1000, 0000, 0000, 1100)); // IS21, ADC, DAC
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i2c_write_reg(MOD_RST_CTRL, BIN(1000, 0000, 0000, 1100)); // IS21, ADC, DAC
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i2c_write_reg(I2S_SR_CTRL, BIN(0111, 0000, 0000, 0000)); // 44.1kHz
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// analogue config
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i2c_write_reg(I2S1LCK_CTRL,
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BIN(1000, 1000, 0101,
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0000)); // Slave, BCLK=I2S/8,LRCK=32,16bits,I2Smode, Stereo
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i2c_write_reg(I2S1_SDOUT_CTRL, BIN(1100, 0000, 0000, 0000)); // I2S1ADC (R&L)
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i2c_write_reg(I2S1_SDIN_CTRL, BIN(1100, 0000, 0000, 0000)); // IS21DAC (R&L)
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i2c_write_reg(I2S1_MXR_SRC, BIN(0010, 0010, 0000, 0000)); // ADCL, ADCR
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i2c_write_reg(ADC_SRCBST_CTRL,
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BIN(0100, 0100, 0100, 0000)); // disable all boost (default)
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#if ENABLE_ADC
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i2c_write_reg(ADC_SRC, BIN(0000, 0100, 0000, 1000)); // source=linein(R/L)
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i2c_write_reg(ADC_DIG_CTRL,
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BIN(1000, 0000, 0000, 0000)); // enable digital ADC
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i2c_write_reg(ADC_ANA_CTRL,
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BIN(1011, 1011, 0000, 0000)); // enable analogue R/L, 0dB
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#else
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i2c_write_reg(ADC_SRC, BIN(0000, 0000, 0000, 0000)); // source=none
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i2c_write_reg(ADC_DIG_CTRL,
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BIN(0000, 0000, 0000, 0000)); // disable digital ADC
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i2c_write_reg(ADC_ANA_CTRL,
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BIN(0011, 0011, 0000, 0000)); // disable analogue R/L, 0dB
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#endif
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//Path Configuration
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i2c_write_reg(DAC_MXR_SRC, BIN(1000, 1000, 0000, 0000)); // DAC from I2S
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i2c_write_reg(DAC_DIG_CTRL, BIN(1000, 0000, 0000, 0000)); // enable DAC
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i2c_write_reg(
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OMIXER_DACA_CTRL,
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BIN(1111, 0000, 0000,
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0000)); // enable DAC/Analogue (see note on offset removal and PA)
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i2c_write_reg(OMIXER_DACA_CTRL,
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BIN(1111, 1111, 0000,
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0000)); // this toggle is needed for headphone PA offset
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#if ENABLE_ADC
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i2c_write_reg(
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OMIXER_SR,
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BIN(0000, 0001, 0000,
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0010)); // source=DAC(R/L) (are DACR and DACL really inverted in bitmap?)
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#else
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i2c_write_reg(OMIXER_SR, BIN(0000, 0101, 0000,
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1010)); // source=DAC(R/L) and LINEIN(R/L)
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#endif
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// configure I2S pins & install driver
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i2s_pin_config_t i2s_pin_config = (i2s_pin_config_t){
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.bck_io_num = 27, .ws_io_num = 26, .data_out_num = 25, .data_in_num = -1};
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res |= i2s_driver_install(i2s_num, i2s_config, 0, NULL);
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res |= i2s_set_pin(i2s_num, &i2s_pin_config);
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// enable earphone & speaker
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i2c_write_reg(SPKOUT_CTRL, 0x0220);
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i2c_write_reg(HPOUT_CTRL, 0xf801);
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// set gain for speaker and earphone
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ac101_set_spk_volume(70);
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ac101_set_earph_volume(70);
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ESP_LOGI(TAG, "DAC using I2S bck:%d, ws:%d, do:%d", i2s_pin_config.bck_io_num,
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i2s_pin_config.ws_io_num, i2s_pin_config.data_out_num);
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return (res == ESP_OK);
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}
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/****************************************************************************************
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* init
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*/
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static void deinit(void) {
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i2c_driver_delete(i2c_port);
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}
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/****************************************************************************************
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* change volume
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*/
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static void volume(unsigned left, unsigned right) {
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ac101_set_earph_volume(left);
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// nothing at that point, volume is handled by backend
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}
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/****************************************************************************************
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* power
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*/
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static void power(adac_power_e mode) {
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switch (mode) {
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case ADAC_STANDBY:
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case ADAC_OFF:
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ac101_stop();
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break;
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case ADAC_ON:
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ac101_start(AC_MODULE_DAC);
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break;
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default:
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ESP_LOGW(TAG, "unknown power command");
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break;
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}
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}
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/****************************************************************************************
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* speaker
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*/
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static void speaker(bool active) {
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uint16_t value = i2c_read_reg(SPKOUT_CTRL);
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if (active)
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i2c_write_reg(SPKOUT_CTRL, value | SPKOUT_EN);
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else
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i2c_write_reg(SPKOUT_CTRL, value & ~SPKOUT_EN);
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}
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/****************************************************************************************
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* headset
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*/
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static void headset(bool active) {
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// there might be aneed to toggle OMIXER_DACA_CTRL 11:8, not sure
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uint16_t value = i2c_read_reg(HPOUT_CTRL);
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if (active)
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i2c_write_reg(HPOUT_CTRL, value | EAROUT_EN);
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else
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i2c_write_reg(HPOUT_CTRL, value & ~EAROUT_EN);
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}
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/****************************************************************************************
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*
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*/
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static esp_err_t i2c_write_reg(uint8_t reg, uint16_t val) {
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i2c_cmd_handle_t cmd = i2c_cmd_link_create();
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esp_err_t ret = 0;
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uint8_t send_buff[4];
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send_buff[0] = (AC101_ADDR << 1);
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send_buff[1] = reg;
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send_buff[2] = (val >> 8) & 0xff;
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send_buff[3] = val & 0xff;
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ret |= i2c_master_start(cmd);
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ret |= i2c_master_write(cmd, send_buff, 4, ACK_CHECK_EN);
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ret |= i2c_master_stop(cmd);
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ret |= i2c_master_cmd_begin(i2c_port, cmd, 1000 / portTICK_PERIOD_MS);
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i2c_cmd_link_delete(cmd);
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return ret;
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}
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/****************************************************************************************
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*
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*/
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static uint16_t i2c_read_reg(uint8_t reg) {
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uint8_t data[2] = {0};
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i2c_cmd_handle_t cmd = i2c_cmd_link_create();
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i2c_master_start(cmd);
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i2c_master_write_byte(cmd, (AC101_ADDR << 1) | WRITE_BIT, ACK_CHECK_EN);
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i2c_master_write_byte(cmd, reg, ACK_CHECK_EN);
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i2c_master_start(cmd);
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i2c_master_write_byte(cmd, (AC101_ADDR << 1) | READ_BIT,
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ACK_CHECK_EN); //check or not
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i2c_master_read(cmd, data, 2, ACK_VAL);
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i2c_master_stop(cmd);
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i2c_master_cmd_begin(i2c_port, cmd, 1000 / portTICK_PERIOD_MS);
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i2c_cmd_link_delete(cmd);
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return (data[0] << 8) + data[1];
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;
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}
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/****************************************************************************************
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*
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*/
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void set_sample_rate(int rate) {
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if (rate == 8000)
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rate = SAMPLE_RATE_8000;
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else if (rate == 11025)
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rate = SAMPLE_RATE_11052;
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else if (rate == 12000)
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rate = SAMPLE_RATE_12000;
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else if (rate == 16000)
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rate = SAMPLE_RATE_16000;
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else if (rate == 22050)
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rate = SAMPLE_RATE_22050;
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else if (rate == 24000)
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rate = SAMPLE_RATE_24000;
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else if (rate == 32000)
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rate = SAMPLE_RATE_32000;
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else if (rate == 44100)
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rate = SAMPLE_RATE_44100;
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else if (rate == 48000)
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rate = SAMPLE_RATE_48000;
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else if (rate == 96000)
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rate = SAMPLE_RATE_96000;
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else if (rate == 192000)
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rate = SAMPLE_RATE_192000;
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else {
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ESP_LOGW(TAG, "Unknown sample rate %hu", rate);
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rate = SAMPLE_RATE_44100;
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}
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i2c_write_reg(I2S_SR_CTRL, rate);
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}
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/****************************************************************************************
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* Get normalized (0..100) speaker volume
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*/
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static int ac101_get_spk_volume(void) {
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return ((i2c_read_reg(SPKOUT_CTRL) & 0x1f) * 100) / 0x1f;
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}
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/****************************************************************************************
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* Set normalized (0..100) volume
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*/
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static void ac101_set_spk_volume(uint8_t volume) {
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uint16_t value = min(volume, 100);
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value = ((int)value * 0x1f) / 100;
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value |= i2c_read_reg(SPKOUT_CTRL) & ~0x1f;
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i2c_write_reg(SPKOUT_CTRL, value);
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}
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/****************************************************************************************
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* Get normalized (0..100) earphone volume
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*/
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static int ac101_get_earph_volume(void) {
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return (((i2c_read_reg(HPOUT_CTRL) >> 4) & 0x3f) * 100) / 0x3f;
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}
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/****************************************************************************************
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* Set normalized (0..100) earphone volume
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*/
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static void ac101_set_earph_volume(uint8_t volume) {
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uint16_t value = min(volume, 255);
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value = (((int)value * 0x3f) / 255) << 4;
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value |= i2c_read_reg(HPOUT_CTRL) & ~(0x3f << 4);
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i2c_write_reg(HPOUT_CTRL, value);
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}
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/****************************************************************************************
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*
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*/
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static void ac101_set_output_mixer_gain(ac_output_mixer_gain_t gain,
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ac_output_mixer_source_t source) {
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uint16_t regval, temp, clrbit;
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regval = i2c_read_reg(OMIXER_BST1_CTRL);
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switch (source) {
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case SRC_MIC1:
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temp = (gain & 0x7) << 6;
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clrbit = ~(0x7 << 6);
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break;
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case SRC_MIC2:
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temp = (gain & 0x7) << 3;
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clrbit = ~(0x7 << 3);
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break;
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case SRC_LINEIN:
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temp = (gain & 0x7);
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clrbit = ~0x7;
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break;
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default:
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return;
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}
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regval &= clrbit;
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regval |= temp;
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i2c_write_reg(OMIXER_BST1_CTRL, regval);
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}
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/****************************************************************************************
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*
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*/
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static void ac101_start(ac_module_t mode) {
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if (mode == AC_MODULE_LINE) {
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i2c_write_reg(0x51, 0x0408);
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i2c_write_reg(0x40, 0x8000);
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i2c_write_reg(0x50, 0x3bc0);
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}
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if (mode == AC_MODULE_ADC || mode == AC_MODULE_ADC_DAC ||
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mode == AC_MODULE_LINE) {
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// I2S1_SDOUT_CTRL
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// i2c_write_reg(PLL_CTRL2, 0x8120);
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i2c_write_reg(0x04, 0x800c);
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i2c_write_reg(0x05, 0x800c);
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// res |= i2c_write_reg(0x06, 0x3000);
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}
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if (mode == AC_MODULE_DAC || mode == AC_MODULE_ADC_DAC ||
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mode == AC_MODULE_LINE) {
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uint16_t value = i2c_read_reg(PLL_CTRL2);
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value |= 0x8000;
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i2c_write_reg(PLL_CTRL2, value);
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}
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}
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/****************************************************************************************
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*
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*/
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static void ac101_stop(void) {
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uint16_t value = i2c_read_reg(PLL_CTRL2);
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value &= ~0x8000;
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i2c_write_reg(PLL_CTRL2, value);
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}
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/****************************************************************************************
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*
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*/
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static void ac101_deinit(void) {
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i2c_write_reg(CHIP_AUDIO_RS, 0x123); //soft reset
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}
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/****************************************************************************************
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* Don't know when this one is supposed to be called
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*/
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static void ac101_i2s_config_clock(ac_i2s_clock_t* cfg) {
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uint16_t regval = 0;
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regval = i2c_read_reg(I2S1LCK_CTRL);
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regval &= 0xe03f;
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regval |= (cfg->bclk_div << 9);
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regval |= (cfg->lclk_div << 6);
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i2c_write_reg(I2S1LCK_CTRL, regval);
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} |