increase 4d adc gain

2026-05-20 16:14:52 +08:00
parent 85e8bf04f0
commit f4faefc8e5
1 changed files with 1 additions and 1 deletions
--- a/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/audiohw.xc
+++ b/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/audiohw.xc
@@ -382,7 +382,7 @@ void mic_volume(unsigned level)
    {
        // 改动原因：移除旧版37~38寄存器额外数字增益路径，最大限制到24dB（1~24，1dB/步）。
        debug_printf("mic_volume write reg=%d\n", level);
-        unsafe {NAU88C22_REGWRITE(0x007E, (level << 8), (client interface i2c_master_if)i_i2c_client);}
+        unsafe {NAU88C22_REGWRITE(0x007E, ((level + 4) << 8), (client interface i2c_master_if)i_i2c_client);}
        unsafe {NAU88C22_REGWRITE(0x0035, (0xcfcf), (client interface i2c_master_if)i_i2c_client);}
    }
 }