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spi: added an API to get max transaction length and use in spi lcd driver

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This commit is contained in:
Armando
2023-04-24 14:21:13 +08:00
committed by Armando (Dou Yiwen)
parent 2bc999db7b
commit a3ed59744b
3 changed files with 36 additions and 3 deletions
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12
components/driver/include/driver/spi_master.h
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@@ -369,6 +369,18 @@ void spi_get_timing(bool gpio_is_used, int input_delay_ns, int eff_clk, int *dum
*/
int spi_get_freq_limit(bool gpio_is_used, int input_delay_ns);
/**
* @brief Get max length (in bytes) of one transaction
*
* @param host_id SPI peripheral
* @param[out] max_bytes Max length of one transaction, in bytes
*
* @return
* - ESP_OK: On success
* - ESP_ERR_INVALID_ARG: Invalid argument
*/
esp_err_t spi_bus_get_max_transaction_len(spi_host_device_t host_id, size_t *max_bytes);
#ifdef __cplusplus
}
#endif