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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/*
* Peripheral : I2C1
* SDA : PB9
* SCL : PB6
*/
#ifndef _GINPUT_LLD_MOUSE_BOARD_H
#define _GINPUT_LLD_MOUSE_BOARD_H
// Avoid naming collisions with CubeHAL
#if GFX_COMPAT_V2 && GFX_COMPAT_OLDCOLORS
#undef Red
#undef Green
#undef Blue
#endif
// Include CubeHAL
#include "stm32f4xx_hal.h"
// Resolution and Accuracy Settings
#define GMOUSE_EXC7200_PEN_CALIBRATE_ERROR 8
#define GMOUSE_EXC7200_PEN_CLICK_ERROR 6
#define GMOUSE_EXC7200_PEN_MOVE_ERROR 4
#define GMOUSE_EXC7200_FINGER_CALIBRATE_ERROR 14
#define GMOUSE_EXC7200_FINGER_CLICK_ERROR 18
#define GMOUSE_EXC7200_FINGER_MOVE_ERROR 14
// Number of bytes for the private area of this board file
#define GMOUSE_EXC7200_BOARD_DATA_SIZE 0
// The slave address of the I2C EXC7200
#define EXC7200_SLAVE_ADDR 0x08
static I2C_HandleTypeDef _i2cHandle;
static bool_t init_board(GMouse* m, unsigned driverinstance)
{
GPIO_InitTypeDef GPIO_InitStruct;
(void)m;
(void)driverinstance;
// Enable peripheral clocks
__HAL_RCC_I2C1_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
// SCL pin setup
GPIO_InitStruct.Pin = GPIO_PIN_6;
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);
// SDA pin setup
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);
// Initialize the I2C peripheral
_i2cHandle.Instance = I2C1;
_i2cHandle.Init.ClockSpeed = 400000;
_i2cHandle.Init.DutyCycle = I2C_DUTYCYCLE_2;
_i2cHandle.Init.OwnAddress1 = 0;
_i2cHandle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
_i2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED;
_i2cHandle.Init.OwnAddress2 = 0;
_i2cHandle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED;
_i2cHandle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED;
HAL_I2C_Init(&_i2cHandle);
return TRUE;
}
static bool_t read_bytes(GMouse* m, uint8_t reg, uint8_t* buffer, uint8_t nbrBytes)
{
(void)m;
HAL_I2C_Master_Transmit(&_i2cHandle, (uint16_t)EXC7200_SLAVE_ADDR, (uint8_t*)®, 1, 10000);
HAL_I2C_Master_Receive(&_i2cHandle, (uint16_t)EXC7200_SLAVE_ADDR, buffer, nbrBytes, 10000);
return TRUE;
}
#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
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