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24db adc gain

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Steven Dan
2026-05-23 15:19:42 +08:00
parent 7fe1385ec0
commit 1f753ac72f
2 changed files with 4 additions and 4 deletions
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4
sw_usb_audio/app_usb_aud_fosi_c1/src/extensions/audiohw.xc
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@@ -48,7 +48,7 @@ unsigned g_unmute_dac_state, g_unmute_time, g_format_time;
unsigned g_volume_level = 60, g_saved_volume_level = 60;
unsigned g_request_volume_set = 0;
unsigned g_dac_vol = 0xB8;
unsigned g_adc_vol = 0x25;
unsigned g_adc_vol = 0x18;
// 改动原因：CODEC 在 AudioHwRemote2 内完成初始化后置 1，供其它逻辑确认 NAU88 已就绪。
unsigned g_codec_init_done = 0;
unsigned g_adc_loop = 0;
@@ -265,7 +265,7 @@ void switch_mode_by_c1_mode(unsigned c1_mode, unsigned force_reboot)
#define NAU88L21_PGA_GAIN_REG_MIN_USED_VALUE 0x0 // 0x1=1, 0dB (0x0, -1dB which is not used in this design)
#define NAU88L21_PGA_GAIN_REG_MAX_VALUE 0x25+1 // 0x25=37, 36dB. +1 is for extra 1.5dB digital gain
#define NAU88L21_PGA_GAIN_REG_DEFAULT_VALUE (NAU88L21_PGA_GAIN_REG_MAX_VALUE)
#define NAU88L21_PGA_GAIN_REG_DEFAULT_VALUE (24)
// 改动原因：4E 为耳机/MIC 检测输入（读 bit2/bit3），原先声明为 out 无法采样；改为 in port 与硬件方向一致。
on tile[0]: in port p_mic_phone_detect = XS1_PORT_4E;