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#include "stm32f4xx_hal.h"
#ifndef _GINPUT_LLD_MOUSE_BOARD_H
#define _GINPUT_LLD_MOUSE_BOARD_H
// Resolution and Accuracy Settings
#define GMOUSE_ADS7843_PEN_CALIBRATE_ERROR 8
#define GMOUSE_ADS7843_PEN_CLICK_ERROR 6
#define GMOUSE_ADS7843_PEN_MOVE_ERROR 4
#define GMOUSE_ADS7843_FINGER_CALIBRATE_ERROR 14
#define GMOUSE_ADS7843_FINGER_CLICK_ERROR 18
#define GMOUSE_ADS7843_FINGER_MOVE_ERROR 14
// How much extra data to allocate at the end of the GMouse structure for the board's use
#define GMOUSE_ADS7843_BOARD_DATA_SIZE 0
static SPI_HandleTypeDef _hspi;
static gBool init_board(GMouse* m, unsigned driverinstance)
{
GPIO_InitTypeDef GPIO_InitStruct;
(void)m;
(void)driverinstance;
// Peripheral clocks
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_SPI1_CLK_ENABLE();
// GPIO pins
{
// PA4 (chip select)
GPIO_InitStruct.Pin = GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = 0;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
// PA5 (SPI SCK)
GPIO_InitStruct.Pin = GPIO_PIN_5;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
// PA6 (SPI MISO)
GPIO_InitStruct.Pin = GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
// PA7 (SPI MOSI)
GPIO_InitStruct.Pin = GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
// PB1 (busy)
GPIO_InitStruct.Pin = GPIO_PIN_1;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = 0;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
// PC4 (pen IRQ)
GPIO_InitStruct.Pin = GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
}
// SPI
_hspi.Instance = SPI1;
_hspi.Init.Mode = SPI_MODE_MASTER;
_hspi.Init.Direction = SPI_DIRECTION_2LINES;
_hspi.Init.DataSize = SPI_DATASIZE_8BIT;
_hspi.Init.CLKPolarity = SPI_POLARITY_LOW;
_hspi.Init.CLKPhase = SPI_PHASE_1EDGE;
_hspi.Init.NSS = SPI_NSS_SOFT;
_hspi.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
_hspi.Init.FirstBit = SPI_FIRSTBIT_MSB;
_hspi.Init.TIMode = SPI_TIMODE_DISABLE;
_hspi.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
_hspi.Init.CRCPolynomial = 10;
if (HAL_SPI_Init(&_hspi) != HAL_OK) {
return gFalse;
}
return gTrue;
}
static GFXINLINE gBool getpin_pressed(GMouse* m)
{
(void)m;
if (HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_4) == GPIO_PIN_RESET)
return gTrue;
return gFalse;
}
static GFXINLINE void aquire_bus(GMouse* m)
{
(void)m;
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_4, GPIO_PIN_RESET);
}
static GFXINLINE void release_bus(GMouse* m)
{
(void)m;
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_4, GPIO_PIN_SET);
}
static GFXINLINE gU16 read_value(GMouse* m, gU16 reg)
{
gU8 txbuf[3] = {0, 0, 0};
gU8 rxbuf[3] = {0, 0, 0};
gU16 ret;
(void)m;
txbuf[0] = reg;
HAL_SPI_TransmitReceive(&_hspi, txbuf, rxbuf, 3, 1000);
return (rxbuf[1] << 5) | (rxbuf[2] >> 3);
}
#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
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