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SSD1312: Add example board file

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This commit is contained in:
Joel Bodenmann 2023-10-31 12:30:19 +01:00
parent cae9c0c320
commit 32bdcfaf28
1 changed files with 92 additions and 0 deletions
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boards/addons/gdisp/board_SSD1312_stm32cubehal.h Normal file
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#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);
}