Espressif ESP32-S2 - Page 248

Chapter 2. API Reference
• ESP_OK success
Parameters
• channel: DAC channel
esp_err_t dac_cw_generator_enable(void)
Enable cosine wave generator output.
Return
• ESP_OK success
esp_err_t dac_cw_generator_disable(void)
Disable cosine wave generator output.
Return
• ESP_OK success
esp_err_t dac_cw_generator_config(dac_cw_config_t *cw)
Config the cosine wave generator function in DAC module.
Return
• ESP_OK success
• ESP_ERR_INVALID_ARG The parameter is NULL.
Parameters
• cw: Configuration.
GPIO Lookup Macros Some useful macros can be used to specified the GPIO number of a DAC channel, or vice
versa. e.g.
1. DAC_CHANNEL_1_GPIO_NUM is the GPIO number of channel 1 (GPIO17);
2. DAC_GPIO18_CHANNEL is the channel number of GPIO 26 (channel 2).
Header File
• components/soc/esp32s2/include/soc/dac_channel.h
Macros
DAC_GPIO17_CHANNEL
DAC_CHANNEL_1_GPIO_NUM
DAC_GPIO18_CHANNEL
DAC_CHANNEL_2_GPIO_NUM
Header File
• components/hal/include/hal/dac_types.h
Structures
struct dac_cw_config_t
Config the cosine wave generator function in DAC module.
Public Members
dac_channel_t en_ch
Enable the cosine wave generator of DAC channel.
dac_cw_scale_t scale
Set the amplitude of the cosine wave generator output.
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