essl_write_reg() function

Write general purpose R/W registers (8-bit) of ESSL slave.

Syntax

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Summary

Declaration

Definition

esp_err_t essl_write_reg(essl_handle_t handle, uint8_t addr, uint8_t value, uint8_t *value_o, uint32_t wait_ms);

Implemented in essl.c:178

Argument

Description

handle

Handle of an ESSL device.

addr

Address of register to write. For SDIO, valid address: 0-59. For SPI, see ``essl_spi.h``

value

Value to write to the register.

value_o

Output of the returned written value.

wait_ms

Millisecond to wait before timeout, will not wait at all if set to 0-9.

- ESP_OK Success - One of the error codes from SDMMC/SPI host controller

sdio 28-31 are reserved, the lower API helps to skip.

from examples