So I was experimenting with the Hardware Codec and I created a simple config which redirects the audio coming from the LINE IN mic to HEADPHONE OUT speakers.
Here's the configuration:
const uint32_t line_in_to_headphone[][2] = {
/*
GPIO 9 -> SPI CS
GPIO 10 -> SPI CLK
GPIO 11 -> SPI MISO
GPIO 12 -> SPI MOSI
*/
{ CS47L63_GPIO9_CTRL1, 0xE1000000 },
{ CS47L63_GPIO10_CTRL1, 0xE1000000 },
{ CS47L63_GPIO11_CTRL1, 0xE1000000 },
{ CS47L63_GPIO12_CTRL1, 0xE1000000 },
/* CLK Config */
{ CS47L63_OUTPUT_SYS_CLK, 0x8000 },
{ CS47L63_OUTPUT_DSP_CLK, 0x0010 },
/* SYS CLK Enable */
{ CS47L63_SYSTEM_CLOCK1, 0x0444 },
/* Sample Rate -> 192KHz */
{ CS47L63_SAMPLE_RATE1, 0x0005 },
/* Disable unused sample rates */
{ CS47L63_SAMPLE_RATE2, 0 },
{ CS47L63_SAMPLE_RATE3, 0 },
{ CS47L63_SAMPLE_RATE4, 0 },
/* FLL Config */
{ CS47L63_FLL1_CONTROL1, 0x0001 },
{ CS47L63_FLL1_CONTROL2, 0x28600177 },
{ CS47L63_FLL1_CONTROL3, 0x10000 },
{ CS47L63_FLL1_CONTROL4, 0x23F05004 },
/* Line In Setup */
{ CS47L63_INPUT_CONTROL, 0x000C },
{ CS47L63_INPUT_CONTROL3, 0x20000000 },
{ CS47L63_IN2L_CONTROL1, 0x10000004 },
{ CS47L63_IN2L_CONTROL2, 0xBC0080 },
{ CS47L63_IN2R_CONTROL1, 0x10000004 },
{ CS47L63_IN2R_CONTROL2, 0xBC0080 },
/* High pass filter */
{ CS47L63_INPUT_HPF_CONTROL, 0x0001 },
/* Output enable */
{ CS47L63_OUTPUT_ENABLE_1, 0x0002 },
{ CS47L63_OUT1L_VOLUME_1, 0x00BC },
{ CS47L63_OUT1L_INPUT1, 0x800012 },
{ CS47L63_OUT1L_INPUT2, 0x800013 },
/* Digital core sample rate */
{ CS47L63_FX_SAMPLE_RATE, 0x0800 },
};
However, nothing works as intended. There's no audio being streamed out of speakers.
One of my engineers in the hardware domain suggested me to look into the TRACECLK config as the hardware codec runs on some internal clock source. Is it internally setup or do I need to set it up myself? Also are there any corrections in the config file?
