96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.io/license.html
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*/
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/*
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* Peripheral : I2C1
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* SDA : PB9
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* SCL : PB6
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*/
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#ifndef _GINPUT_LLD_MOUSE_BOARD_H
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#define _GINPUT_LLD_MOUSE_BOARD_H
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// Avoid naming collisions with CubeHAL
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#if GFX_COMPAT_V2 && GFX_COMPAT_OLDCOLORS
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#undef Red
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#undef Green
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#undef Blue
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#endif
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// Include CubeHAL
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#include "stm32f4xx_hal.h"
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// Resolution and Accuracy Settings
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#define GMOUSE_EXC7200_PEN_CALIBRATE_ERROR 8
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#define GMOUSE_EXC7200_PEN_CLICK_ERROR 6
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#define GMOUSE_EXC7200_PEN_MOVE_ERROR 4
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#define GMOUSE_EXC7200_FINGER_CALIBRATE_ERROR 14
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#define GMOUSE_EXC7200_FINGER_CLICK_ERROR 18
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#define GMOUSE_EXC7200_FINGER_MOVE_ERROR 14
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// Number of bytes for the private area of this board file
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#define GMOUSE_EXC7200_BOARD_DATA_SIZE 0
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// The slave address of the I2C EXC7200
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#define EXC7200_SLAVE_ADDR 0x08
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static I2C_HandleTypeDef _i2cHandle;
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static gBool init_board(GMouse* m, unsigned driverinstance)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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(void)m;
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(void)driverinstance;
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// Enable peripheral clocks
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__HAL_RCC_I2C1_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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// SCL pin setup
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GPIO_InitStruct.Pin = GPIO_PIN_6;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
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GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
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HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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// SDA pin setup
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GPIO_InitStruct.Pin = GPIO_PIN_9;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
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GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
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HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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// Initialize the I2C peripheral
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_i2cHandle.Instance = I2C1;
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_i2cHandle.Init.ClockSpeed = 400000;
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_i2cHandle.Init.DutyCycle = I2C_DUTYCYCLE_2;
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_i2cHandle.Init.OwnAddress1 = 0;
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_i2cHandle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
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_i2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED;
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_i2cHandle.Init.OwnAddress2 = 0;
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_i2cHandle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED;
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_i2cHandle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED;
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HAL_I2C_Init(&_i2cHandle);
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return gTrue;
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}
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static gBool read_bytes(GMouse* m, uint8_t reg, uint8_t* buffer, uint8_t nbrBytes)
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{
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(void)m;
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HAL_I2C_Master_Transmit(&_i2cHandle, (uint16_t)EXC7200_SLAVE_ADDR, (uint8_t*)®, 1, 10000);
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HAL_I2C_Master_Receive(&_i2cHandle, (uint16_t)EXC7200_SLAVE_ADDR, buffer, nbrBytes, 10000);
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return gTrue;
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}
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#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
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