Disclaimer: The code and project was tested with the following versions of the sw:
- Xtensa Xplorer 9.0.20
- Xtensa OCD 15.03
- Core Configuration: hifi3z_lark_RI_2022_10
- Xtensa Build Tools: RI 2022_10
- Lark SDK 3.3.1
The code below configures an easy ADC --> DAC audio path using the ADAU1860SDK. Look at the attachment for a complete code.
Copyright (c) 2026 by Analog Devices, Inc. All rights reserved. This software is proprietary to Analog Devices, Inc. and its licensors. This software is provided on an “as is” basis without any representations, warranties, guarantees or liability of any kind.
int32_t err;
adi_lark_device_t device =
{
.cp_mode = API_LARK_CP_NATIVE
};
/* disable cache */
xthal_set_region_attribute((void *)0x40000000, 0x20000000, XCHAL_CA_BYPASS, XTHAL_CAFLAG_EXACT);
/* set REG_DAC_AUTO_MUTE_CTRL_ADDR to disable DAC auto-mute for easy debug */
err = adi_lark_hal_reg_write(&device, 0x4000C054, 0xFF);
LARK_ERROR_RETURN(err);
/* power up device and audio block */
err = adi_lark_pmu_set_chip_power_mode(&device, API_LARK_PWR_MODE_ACTIVE);
LARK_ERROR_RETURN(err);
err = adi_lark_pmu_enable_master_block(&device, 1);
LARK_ERROR_RETURN(err);
/* set bus clock */
err = adi_lark_clk_set_mclk_freq(&device, API_LARK_MCLK_FREQ_24P576, true);
LARK_ERROR_RETURN(err);
/* power on all modules */
err = adi_lark_pmu_enable_master_block(&device, true);
LARK_ERROR_RETURN(err);
/* ADC0: 96KHz, differential input */
err = adi_lark_adc_set_sample_rate(&device, 0, API_LARK_ADC_SAMPLE_RATE_96KHz);
LARK_ERROR_RETURN(err);
err = adi_lark_adc_set_input_mode(&device, 0, false);
LARK_ERROR_RETURN(err);
/* DAC: 96KHz, from ADC0 */
err = adi_lark_dac_set_sample_rate(&device, API_LARK_DAC_SAMPLE_RATE_96KHz);
LARK_ERROR_RETURN(err);
err = adi_lark_dac_select_input_route(&device, API_LARK_DAC_ROUTE_ADC0);
LARK_ERROR_RETURN(err);
/* HPAMP: headphone mode*/
err = adi_lark_hpamp_set_output_mode(&device, API_LARK_HPAMP_HEADPHONE);
LARK_ERROR_RETURN(err);
/* Power on ADC0 and DAC */
err = adi_lark_adc_enable_power_on(&device, 0, true);
LARK_ERROR_RETURN(err);
err = adi_lark_dac_enable_power_on(&device, true);
LARK_ERROR_RETURN(err);
err = adi_lark_dac_enable_mute(&device, false);
LARK_ERROR_RETURN(err);
err = adi_lark_dac_set_volume(&device, 0x40);
LARK_ERROR_RETURN(err);
while(1)
{
asm("WAITI 0");
}
