122 lines
4.1 KiB
C
122 lines
4.1 KiB
C
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#include "u8g2_hal.h"
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#include "menuConfig.h"
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#include "i2c.h"
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#define HARDWARE_I2C
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#define OLED_I2C_DEV_ADDRESS 0x78
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#ifdef HARDWARE_I2C
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static uint8_t u8x8_byte_hw_i2c(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) {
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uint8_t* data = (uint8_t*) arg_ptr;
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switch(msg) {
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case U8X8_MSG_BYTE_SEND:
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while( arg_int-- > 0 ) {
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///@todo <20><EFBFBD>
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/* ==================================== */
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I2C2->DR = *data++;
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while( __HAL_I2C_GET_FLAG(&hi2c2, I2C_FLAG_TXE) == RESET );
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/* ==================================== */
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}
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break;
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case U8X8_MSG_BYTE_INIT:
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/* add your custom code to init i2c subsystem */
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break;
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case U8X8_MSG_BYTE_SET_DC:
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/* ignored for i2c */
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break;
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case U8X8_MSG_BYTE_START_TRANSFER:
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///@todo <20><EFBFBD>
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/* ==================================== */
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/* Wait until BUSY flag is reset */
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while( __HAL_I2C_GET_FLAG( &hi2c2, I2C_FLAG_BUSY ) == SET );
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/* Disable Pos */
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CLEAR_BIT( I2C2->CR1, I2C_CR1_POS );
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/* Generate Start */
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SET_BIT( I2C2->CR1, I2C_CR1_START );
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/* Wait until SB flag is set */
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while( __HAL_I2C_GET_FLAG( &hi2c2, I2C_FLAG_SB ) == RESET );
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/* Send slave address */
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I2C2->DR = I2C_7BIT_ADD_WRITE( OLED_I2C_DEV_ADDRESS );
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/* Wait until ADDR flag is set */
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while ( __HAL_I2C_GET_FLAG( &hi2c2, I2C_FLAG_ADDR) == RESET );
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/* Clear ADDR flag */
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__HAL_I2C_CLEAR_ADDRFLAG( &hi2c2 );
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/* Wait until TXE flag is set */
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while( __HAL_I2C_GET_FLAG(&hi2c2, I2C_FLAG_TXE) == RESET );
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/* ==================================== */
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break;
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case U8X8_MSG_BYTE_END_TRANSFER:
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///@todo <20><EFBFBD>
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/* ==================================== */
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/* Generate Stop */
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SET_BIT( I2C2->CR1, I2C_CR1_STOP );
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/* ==================================== */
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break;
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default:
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return 0;
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}
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return 1;
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}
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static uint8_t u8x8_gpio_and_delay_hw(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) {
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switch (msg) {
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case U8X8_MSG_DELAY_100NANO: // delay arg_int * 100 nano seconds
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break;
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case U8X8_MSG_DELAY_10MICRO: // delay arg_int * 10 micro seconds
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break;
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case U8X8_MSG_DELAY_MILLI: // delay arg_int * 1 milli second
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HAL_Delay(1);
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break;
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case U8X8_MSG_DELAY_I2C: // arg_int is the I2C speed in 100KHz, e.g. 4 = 400 KHz
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break; // arg_int=1: delay by 5us, arg_int = 4: delay by 1.25us
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case U8X8_MSG_GPIO_I2C_CLOCK: // arg_int=0: Output low at I2C clock pin
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break; // arg_int=1: Input dir with pullup high for I2C clock pin
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case U8X8_MSG_GPIO_I2C_DATA: // arg_int=0: Output low at I2C data pin
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break; // arg_int=1: Input dir with pullup high for I2C data pin
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case U8X8_MSG_GPIO_MENU_SELECT:
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u8x8_SetGPIOResult(u8x8, /* get menu select pin state */ 0);
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break;
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case U8X8_MSG_GPIO_MENU_NEXT:
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u8x8_SetGPIOResult(u8x8, /* get menu next pin state */ 0);
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break;
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case U8X8_MSG_GPIO_MENU_PREV:
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u8x8_SetGPIOResult(u8x8, /* get menu prev pin state */ 0);
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break;
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case U8X8_MSG_GPIO_MENU_HOME:
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u8x8_SetGPIOResult(u8x8, /* get menu home pin state */ 0);
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break;
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default:
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u8x8_SetGPIOResult(u8x8, 1); // default return value
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break;
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}
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return 1;
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}
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//static void HardWare_I2C2_GPIOInit(void)
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//{
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//}
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#endif
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void u8g2Init(u8g2_t *u8g2)
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{
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#ifdef HARDWARE_I2C
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// HardWare_I2C2_GPIOInit();//<2F><><EFBFBD><EFBFBD>i2c.c<><63><EFBFBD><EFBFBD><EFBFBD>ɳ<EFBFBD>ʼ<EFBFBD><CABC>
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u8g2_Setup_ssd1306_i2c_128x64_noname_f(u8g2, U8G2_R0, u8x8_byte_hw_i2c, u8x8_gpio_and_delay_hw);
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#endif
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u8g2_InitDisplay(u8g2);
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u8g2_SetPowerSave(u8g2, 0);
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u8g2_ClearBuffer(u8g2);
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}
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