diff options
Diffstat (limited to 'boards/base/STM32F439i-Eval/CubeHal/gmouse_lld_EXC7200_board.h')
| -rw-r--r-- | boards/base/STM32F439i-Eval/CubeHal/gmouse_lld_EXC7200_board.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/boards/base/STM32F439i-Eval/CubeHal/gmouse_lld_EXC7200_board.h b/boards/base/STM32F439i-Eval/CubeHal/gmouse_lld_EXC7200_board.h new file mode 100644 index 00000000..4f8a18fb --- /dev/null +++ b/boards/base/STM32F439i-Eval/CubeHal/gmouse_lld_EXC7200_board.h @@ -0,0 +1,89 @@ +/* + * 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 + +#include "stm32f4xx_hal_rcc.h" +#include "stm32f4xx_hal_dma.h" +#include "stm32f4xx_hal_gpio.h" +#include "stm32f4xx_hal_i2c.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; + + // 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 */ |