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mute headphone when mic insertion

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This commit is contained in:
Steven Dan
2026-04-11 11:46:44 +08:00
parent 42b7f4e7ce
commit 961615b0f0
1 changed files with 63 additions and 20 deletions
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83
sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/audiohw.xc
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@@ -108,8 +108,10 @@ unsigned g_new_dac_mode = 0;
unsigned g_samfreq = 48000;
unsigned g_dsd_mode = 0;
// mic detect events: mute_handler (tile[1]) → button_task (tile[0])
#define MIC_DET_MUTE 1 // mic插入或全拔出，立即mute
#define MIC_DET_UNMUTE 2 // 插入1s后恢复音量
#define MIC_DET_MUTE 1 // mic插入或全拔出，立即mute mic
#define MIC_DET_UNMUTE 2 // 插入1s后恢复mic音量
#define MIC_DET_DAC_MUTE 3 // mic插入时mute DAC防pop
#define MIC_DET_DAC_UNMUTE 4 // 1s后恢复DAC音量
unsafe chanend uc_audiohw; // tile[1] end: AudioHwConfig → button_task (tile[0])
#if HID_DFU_EN
@@ -403,6 +405,7 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
unsigned flag_mic_mute = 0;
unsigned flag_hp_mute = 0;
unsigned mic_det_muted = 0; // mic检测导致的mute（不影响LED和g_mic_volume_level）
unsigned dac_det_muted = 0; // mic插入时临时mute DAC防pop（不影响LED）
unsigned push_button_mic_mute_state_old = 1; // Active low
unsigned push_button_hp_mute_state_old = 1; // Active low
@@ -989,6 +992,18 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
mic_volume(codec_adc_pga_gain_reg_value);
debug_printf("mic_det: unmute -> pga=%d\n", codec_adc_pga_gain_reg_value);
}
} else if (mic_det_cmd == MIC_DET_DAC_MUTE) {
dac_det_muted = 1;
// mute DAC硬件，不改变dac_level/g_volume_level和LED
unsafe { NAU88C22_REGWRITE(0x0034, 0x0000, (client interface i2c_master_if)i_i2c_client); }
debug_printf("mic_det: dac mute\n");
} else if (mic_det_cmd == MIC_DET_DAC_UNMUTE) {
dac_det_muted = 0;
// 恢复DAC音量，但如果用户手动hp_mute或dac_level==0则不恢复
if (!flag_hp_mute && dac_level > DAC_LEVEL_MIN) {
dac_volume(dac_level - DAC_LEVEL_MAX);
debug_printf("mic_det: dac unmute -> level=%d\n", dac_level);
}
}
break;
}
@@ -1646,7 +1661,8 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
// 增加音量
++dac_level;
g_volume_level = dac_level;
dac_volume(dac_level - DAC_LEVEL_MAX);
if (!dac_det_muted)
dac_volume(dac_level - DAC_LEVEL_MAX);
save_value(dac_vol_path, dac_level);
uint8_t new_led_count = dac_gain_to_led[dac_level];
@@ -1665,10 +1681,12 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
// 减小音量
--dac_level;
g_volume_level = dac_level;
if(dac_level == DAC_LEVEL_MIN)
unsafe { NAU88C22_REGWRITE(0x0034, 0x0000, (client interface i2c_master_if)i_i2c_client); }
else
dac_volume(dac_level - DAC_LEVEL_MAX);
if (!dac_det_muted) {
if(dac_level == DAC_LEVEL_MIN)
unsafe { NAU88C22_REGWRITE(0x0034, 0x0000, (client interface i2c_master_if)i_i2c_client); }
else
dac_volume(dac_level - DAC_LEVEL_MAX);
}
save_value(dac_vol_path, dac_level);
uint8_t new_led_count = dac_gain_to_led[dac_level];
@@ -1740,10 +1758,12 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
}
else
{
if(dac_level == DAC_LEVEL_MIN)
unsafe { NAU88C22_REGWRITE(0x0034, 0x0000, (client interface i2c_master_if)i_i2c_client); }
else
dac_volume(dac_level - DAC_LEVEL_MAX);
if (!dac_det_muted) {
if(dac_level == DAC_LEVEL_MIN)
unsafe { NAU88C22_REGWRITE(0x0034, 0x0000, (client interface i2c_master_if)i_i2c_client); }
else
dac_volume(dac_level - DAC_LEVEL_MAX);
}
g_volume_level = dac_level;
hp_mute_blink_tick = 0;
for(int i = 0; i < 15; i++)
@@ -1796,10 +1816,12 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
if (new_level <= DAC_LEVEL_MAX) {
uint8_t new_led_count;
dac_level = new_level;
if (dac_level == DAC_LEVEL_MIN)
unsafe { NAU88C22_REGWRITE(0x0034, 0x0000, (client interface i2c_master_if)i_i2c_client); }
else
dac_volume(dac_level - DAC_LEVEL_MAX);
if (!dac_det_muted) {
if (dac_level == DAC_LEVEL_MIN)
unsafe { NAU88C22_REGWRITE(0x0034, 0x0000, (client interface i2c_master_if)i_i2c_client); }
else
dac_volume(dac_level - DAC_LEVEL_MAX);
}
save_value(dac_vol_path, (unsigned char)dac_level);
// 更新DAC音量指示LED
new_led_count = dac_gain_to_led[dac_level];
@@ -2102,6 +2124,8 @@ void mute_handler(chanend c_mic_det)
unsigned mic1_in = (det_val >> 1) & 1; // bit1: 1=inserted
unsigned mic2_in = ((det_val >> 2) & 1) ^ 1; // bit2: 0=inserted, invert
unsigned any_mic_in = mic1_in || mic2_in;
unsigned prev_mic1_in = mic1_in;
unsigned prev_mic2_in = mic2_in;
unsigned prev_any_mic_in = any_mic_in;
// 如果开机时全拔出，发送mute
@@ -2126,10 +2150,22 @@ void mute_handler(chanend c_mic_det)
mic2_in = ((det_val >> 2) & 1) ^ 1;
any_mic_in = mic1_in || mic2_in;
if (any_mic_in != prev_any_mic_in) {
// 状态变化：立即mute防止pop音
// 检测单个mic插入事件（从拔出变为插入）
unsigned mic1_inserted = (mic1_in && !prev_mic1_in);
unsigned mic2_inserted = (mic2_in && !prev_mic2_in);
unsigned any_inserted = mic1_inserted || mic2_inserted;
unsigned state_changed = (any_mic_in != prev_any_mic_in) || any_inserted;
if (state_changed) {
// 状态变化：立即mute mic防止pop音
c_mic_det <: (unsigned)MIC_DET_MUTE;
debug_printf("mic det change: mic1=%d mic2=%d -> mute\n", mic1_in, mic2_in);
// 如果有mic插入，同时mute DAC防pop
if (any_inserted) {
c_mic_det <: (unsigned)MIC_DET_DAC_MUTE;
}
debug_printf("mic det change: mic1=%d mic2=%d inserted=%d -> mute\n", mic1_in, mic2_in, any_inserted);
// 等1s让插拔稳定
delay_milliseconds(1000);
@@ -2140,13 +2176,20 @@ void mute_handler(chanend c_mic_det)
mic2_in = ((det_val >> 2) & 1) ^ 1;
any_mic_in = mic1_in || mic2_in;
// 恢复DAC（插入时的临时mute已满1s）
if (any_inserted) {
c_mic_det <: (unsigned)MIC_DET_DAC_UNMUTE;
}
if (any_mic_in) {
// 有mic插入，恢复音量
// 有mic插入，恢复mic音量
c_mic_det <: (unsigned)MIC_DET_UNMUTE;
debug_printf("mic stable inserted -> unmute\n");
}
// 全拔出则保持mute，不发UNMUTE
// 全拔出则保持mic mute，不发UNMUTE
prev_mic1_in = mic1_in;
prev_mic2_in = mic2_in;
prev_any_mic_in = any_mic_in;
// 重新同步timer