81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
#include "main.h"
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#include "tpa6130a2.h"
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tpa6130_ret_t tpa_impl_read_reg(void *handle, uint8_t addr, uint8_t reg, uint8_t *value);
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tpa6130_ret_t tpa_impl_write_reg(void *handle, uint8_t addr, uint8_t reg, uint8_t value);
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extern I2C_HandleTypeDef hi2c4;
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static tpa6130_t s_tpa = {
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.cb =
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{
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.write_reg_cb = tpa_impl_write_reg,
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.read_reg_cb = tpa_impl_read_reg,
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},
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.user_data = &hi2c4,
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};
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/**
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* @brief Bring the amplifier out of shutdown mode,
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* In shutdown mode, the AMP's registers will be resetted.
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*
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* @param up 0 - power down, everything else - power up
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* @return uint8_t 0 - ERROR, everything else - OK
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*/
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uint8_t audio_amp_power(uint8_t up) {
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if (up) {
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HAL_GPIO_WritePin(A_AMP_UP_GPIO_Port, A_AMP_UP_Pin, GPIO_PIN_SET);
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} else {
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HAL_GPIO_WritePin(A_AMP_UP_GPIO_Port, A_AMP_UP_Pin, GPIO_PIN_RESET);
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}
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return 1;
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}
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/**
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* @brief Check if amplifier is ready
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*
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* @return uint8_t 0 - disconnected, 1 - connected
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*/
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uint8_t audio_amp_is_connected(void) {
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uint8_t rev = 0;
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if (tpa6130a2_revision(&s_tpa, &rev) == TPA6130_OK) {
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if (rev == 2) return 1; /* TPA6130A2's rev is 0b0010(2) */
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}
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return 0;
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}
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/**
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* @brief Enable amplifiers and set volume.
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*
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* @param volume volume to be set (1 - 100)
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* @return uint8_t 0 - ERROR, everything else - OK
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*/
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uint8_t audio_amp_set_volume(uint8_t volume) {
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uint8_t converted_vol = 0;
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if(volume > 0) {
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converted_vol = (volume - 1) * 64 / 100;
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}
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if (tpa6130a2_enable_channel(&s_tpa, TPA6130_CH_L | TPA6130_CH_R) != TPA6130_OK) {
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return 0;
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}
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tpa6130_ch_t mute_ch = TPA6130_CH_NONE;
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if (volume == 0) {
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mute_ch = TPA6130_CH_L | TPA6130_CH_R;
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}
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if (tpa6130a2_set_mute(&s_tpa, mute_ch) != TPA6130_OK) {
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return 0;
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}
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if (tpa6130a2_set_volume(&s_tpa, converted_vol) != TPA6130_OK) {
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return 0;
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}
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return 1;
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} |