93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
#pragma once
|
|
|
|
#include <stm32f4xx_hal.h>
|
|
#include <string.h>
|
|
|
|
// The command byte to put on the front of each page line
|
|
#define SSD1312_PAGE_PREFIX 0x40 // Co = 0, D/C = 1
|
|
|
|
static I2C_HandleTypeDef i2cHandle;
|
|
|
|
static GFXINLINE void init_board(GDisplay *g)
|
|
{
|
|
(void) g;
|
|
|
|
// GPIO
|
|
{
|
|
GPIO_InitTypeDef GPIO_InitStruct = {0};
|
|
|
|
__HAL_RCC_GPIOB_CLK_ENABLE();
|
|
|
|
// I2C SCL
|
|
GPIO_InitStruct.Pin = GPIO_PIN_8;
|
|
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
|
|
GPIO_InitStruct.Pull = GPIO_PULLUP;
|
|
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
|
|
GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
|
|
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
|
|
|
|
// I2C SDA
|
|
GPIO_InitStruct.Pin = GPIO_PIN_9;
|
|
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
|
|
GPIO_InitStruct.Pull = GPIO_PULLUP;
|
|
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
|
|
GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
|
|
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
|
|
}
|
|
|
|
// I2C1
|
|
{
|
|
__HAL_RCC_I2C1_CLK_ENABLE();
|
|
|
|
i2cHandle.Instance = I2C1;
|
|
i2cHandle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
|
|
i2cHandle.Init.ClockSpeed = 400000;
|
|
i2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
|
|
i2cHandle.Init.DutyCycle = I2C_DUTYCYCLE_2;
|
|
i2cHandle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
|
|
i2cHandle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
|
|
if (HAL_I2C_Init(&i2cHandle) != HAL_OK)
|
|
gfxHalt("I2C HAL init error");
|
|
}
|
|
}
|
|
|
|
static GFXINLINE void post_init_board(GDisplay *g)
|
|
{
|
|
(void) g;
|
|
}
|
|
|
|
static GFXINLINE void setpin_reset(GDisplay *g, gBool state)
|
|
{
|
|
(void) g;
|
|
(void) state;
|
|
}
|
|
|
|
static GFXINLINE void acquire_bus(GDisplay *g)
|
|
{
|
|
(void) g;
|
|
}
|
|
|
|
static GFXINLINE void release_bus(GDisplay *g)
|
|
{
|
|
(void) g;
|
|
}
|
|
|
|
static GFXINLINE void write_cmd(GDisplay *g, gU8 *data, gU16 length)
|
|
{
|
|
(void) g;
|
|
|
|
gU8 buf[4]; // length is always <= 3
|
|
buf[0] = 0x00;
|
|
memcpy(buf+1, data, length);
|
|
|
|
HAL_I2C_Master_Transmit(&i2cHandle, (0x3c << 1), buf, length+1, 10000);
|
|
}
|
|
|
|
static GFXINLINE void write_data(GDisplay *g, gU8 *data, gU16 length)
|
|
{
|
|
(void) g;
|
|
|
|
HAL_I2C_Master_Transmit(&i2cHandle, (0x3c << 1), data, length, 10000);
|
|
}
|
|
|