diff options
Diffstat (limited to 'boards/addons/ginput/touch/ADS7843')
| -rw-r--r-- | boards/addons/ginput/touch/ADS7843/stm32f4cube_hal.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/boards/addons/ginput/touch/ADS7843/stm32f4cube_hal.h b/boards/addons/ginput/touch/ADS7843/stm32f4cube_hal.h new file mode 100644 index 00000000..6bce29e6 --- /dev/null +++ b/boards/addons/ginput/touch/ADS7843/stm32f4cube_hal.h @@ -0,0 +1,140 @@ +#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 bool_t 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 FALSE; + } + + return TRUE; +} + +static GFXINLINE bool_t getpin_pressed(GMouse* m) +{ + (void)m; + + if (HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_4) == GPIO_PIN_RESET) + return TRUE; + + return FALSE; +} + +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 uint16_t read_value(GMouse* m, uint16_t reg) +{ + uint8_t txbuf[3] = {0, 0, 0}; + uint8_t rxbuf[3] = {0, 0, 0}; + uint16_t 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 */ |