Quick Start Guide for the ABDAC driver

This is the quick start guide for the group_sam_drivers_abdac, with step-by-step instructions on how to configure and use the driver for a specific use case.The code examples can be copied into e.g the main application loop or any other function that will need to control the ABDAC module.

Use cases

• ABDAC Basic Usage

ABDAC basic usage

This use case will demonstrate how to initialize the ABDAC module to output audio data.

Setup steps

Prerequisites

This module requires the following service

• Clock Management (Sysclock)

abdac_basic_setup_code

Add this to the main loop or a setup function:

struct abdac_dev_inst g_abdac_inst;
struct abdac_config   g_abdac_cfg;
abdac_get_config_defaults(&g_abdac_cfg);
g_abdac_cfg.sample_rate_hz = ABDAC_SAMPLE_RATE_11025;
g_abdac_cfg.data_word_format = ABDAC_DATE_16BIT;
g_abdac_cfg.mono = false;
g_abdac_cfg.cmoc = false;
abdac_init(&g_abdac_inst, ABDACB, &g_abdac_cfg);
abdac_enable(&g_abdac_inst);

abdac_basic_setup_workflow

1. Initialize the ABDAC module
2. Enable the ABDAC mode

   • Note

     The syste clock may changed after setting the ABDAC module.

Usage steps

abdac_basic_usage_code

We can set the volume by

abdac_set_volume0(&g_abdac_inst, false, 0x7FFF);
abdac_set_volume1(&g_abdac_inst, false, 0x7FFF);

Or we can mute the volume by

abdac_set_volume0(&g_abdac_inst, true, 0x7FFF);
abdac_set_volume1(&g_abdac_inst, true, 0x7FFF);

We can output the data without PDC by

abdac_write_data0(&g_abdac_inst, data);
abdac_write_data0(&g_abdac_inst, data);

And we can set the interrupt by

abdac_set_callback(&g_abdac_inst, ABDAC_INTERRUPT_TXRDY, callback, 3)