92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
#ifndef U8G2_ESP32_HAL_H
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#define U8G2_ESP32_HAL_H
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/*
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* u8g2_esp32_hal.h
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*
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* Created on: Feb 12, 2017
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* Author: kolban
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*/
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#ifndef U8G2_ESP32_HAL_H_
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#define U8G2_ESP32_HAL_H_
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#include "u8g2.h"
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#include "driver/gpio.h"
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#include "driver/i2c.h"
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#include "driver/spi_master.h"
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#define U8G2_ESP32_HAL_UNDEFINED GPIO_NUM_NC
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#if SOC_I2C_NUM > 1
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#define I2C_MASTER_NUM I2C_NUM_1 // I2C port number for master dev
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#else
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#define I2C_MASTER_NUM I2C_NUM_0 // I2C port number for master dev
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#endif
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#define I2C_MASTER_TX_BUF_DISABLE 0 // I2C master do not need buffer
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#define I2C_MASTER_RX_BUF_DISABLE 0 // I2C master do not need buffer
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#define I2C_MASTER_FREQ_HZ 50000 // I2C master clock frequency
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#define ACK_CHECK_EN 0x1 // I2C master will check ack from slave
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#define ACK_CHECK_DIS 0x0 // I2C master will not check ack from slave
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/** @public
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* HAL configuration structure.
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*/
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typedef struct
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{
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union {
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/* SPI settings. */
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struct
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{
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/* GPIO num for clock. */
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gpio_num_t clk;
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/* GPIO num for SPI mosi. */
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gpio_num_t mosi;
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/* GPIO num for SPI slave/chip select. */
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gpio_num_t cs;
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} spi;
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/* I2C settings. */
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struct
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{
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/* GPIO num for I2C data. */
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gpio_num_t sda;
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/* GPIO num for I2C clock. */
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gpio_num_t scl;
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} i2c;
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} bus;
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/* GPIO num for reset. */
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gpio_num_t reset;
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/* GPIO num for DC. */
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gpio_num_t dc;
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} u8g2_esp32_hal_t;
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/**
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* Construct a default HAL configuration with all fields undefined.
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*/
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#define U8G2_ESP32_HAL_DEFAULT \
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{.bus = {.spi = {.clk = U8G2_ESP32_HAL_UNDEFINED, \
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.mosi = U8G2_ESP32_HAL_UNDEFINED, \
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.cs = U8G2_ESP32_HAL_UNDEFINED}}, \
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.reset = U8G2_ESP32_HAL_UNDEFINED, \
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.dc = U8G2_ESP32_HAL_UNDEFINED}
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/**
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* Initialize the HAL with the given configuration.
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*
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* @see u8g2_esp32_hal_t
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* @see U8G2_ESP32_HAL_DEFAULT
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*/
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void u8g2_esp32_hal_init(u8g2_esp32_hal_t u8g2_esp32_hal_param);
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uint8_t u8g2_esp32_spi_byte_cb(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
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uint8_t u8g2_esp32_i2c_byte_cb(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
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uint8_t u8g2_esp32_gpio_and_delay_cb(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
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#ifdef __cplusplus
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}
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#endif
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#endif /* U8G2_ESP32_HAL_H_ */
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#endif |