esp_rom_spiflash_select_qio_pins() function

Enable Quad I/O pin functions Sets the HD & WP pin functions for Quad I/O modes, based on the efuse SPI pin configuration.

Syntax

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Summary

Declaration

from esp_rom_spiflash.h:338

void esp_rom_spiflash_select_qio_pins(uint8_t wp_gpio_num, uint32_t spiconfig);

Arguments

Argument

Description

wp_gpio_num

- Number of the WP pin to reconfigure for quad I/O.

spiconfig

- Pin configuration, as returned from ets_efuse_get_spiconfig(). - If this parameter is 0, default SPI pins are used and wp_gpio_num parameter is ignored. - If this parameter is 1, default HSPI pins are used and wp_gpio_num parameter is ignored. - For other values, this parameter encodes the HD pin number and also the CLK pin number. CLK pin selection is used to determine if HSPI or SPI peripheral will be used (use HSPI if CLK pin is the HSPI clock pin, otherwise use SPI). Both HD & WP pins are configured via GPIO matrix to map to the selected peripheral.