diff options
Diffstat (limited to 'boards/base/STM32F429i-Discovery/gmouse_lld_STMPE811_board.h')
-rw-r--r-- | boards/base/STM32F429i-Discovery/gmouse_lld_STMPE811_board.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/boards/base/STM32F429i-Discovery/gmouse_lld_STMPE811_board.h b/boards/base/STM32F429i-Discovery/gmouse_lld_STMPE811_board.h new file mode 100644 index 00000000..53c15e86 --- /dev/null +++ b/boards/base/STM32F429i-Discovery/gmouse_lld_STMPE811_board.h @@ -0,0 +1,116 @@ +/* + * 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 + */ + +#ifndef _GINPUT_LLD_MOUSE_BOARD_H +#define _GINPUT_LLD_MOUSE_BOARD_H + +// Resolution and Accuracy Settings +#define GMOUSE_STMPE811_PEN_CALIBRATE_ERROR 8 +#define GMOUSE_STMPE811_PEN_CLICK_ERROR 6 +#define GMOUSE_STMPE811_PEN_MOVE_ERROR 4 +#define GMOUSE_STMPE811_FINGER_CALIBRATE_ERROR 14 +#define GMOUSE_STMPE811_FINGER_CLICK_ERROR 18 +#define GMOUSE_STMPE811_FINGER_MOVE_ERROR 14 + +// How much extra data to allocate at the end of the GMouse structure for the board's use +#define GMOUSE_STMPE811_BOARD_DATA_SIZE 0 + +// Set this to TRUE if you want self-calibration. +// NOTE: This is not as accurate as real calibration. +// It requires the orientation of the touch panel to match the display. +// It requires the active area of the touch panel to exactly match the display size. +#define GMOUSE_STMPE811_SELF_CALIBRATE FALSE + +// If TRUE this board has the STMPE811 IRQ pin connected to a GPIO. +#define GMOUSE_STMPE811_GPIO_IRQPIN TRUE + +// If TRUE this is a really slow CPU and we should always clear the FIFO between reads. +#define GMOUSE_STMPE811_SLOW_CPU FALSE + +// Maximum timeout +#define STMPE811_TIMEOUT 0x3000 + +static const I2CConfig i2ccfg = { + OPMODE_I2C, + 400000, + FAST_DUTY_CYCLE_2, +}; + +static bool_t init_board(GMouse* m, unsigned driverinstance) { + (void) m; + + // This board only supports one touch panel + if (driverinstance) + return FALSE; + + palSetPadMode(GPIOA, 15, PAL_MODE_INPUT | PAL_STM32_PUDR_FLOATING); /* TP IRQ */ + palSetPadMode(GPIOA, 8, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN); /* SCL */ + palSetPadMode(GPIOC, 9, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN); /* SDA */ + + i2cStart(&I2CD3, &i2ccfg); + + return TRUE; +} + +#if GMOUSE_STMPE811_GPIO_IRQPIN + static bool_t getpin_irq(GMouse* m) { + (void) m; + + return !palReadPad(GPIOA, 15); + } +#endif + +static inline void aquire_bus(GMouse* m) { + (void) m; + +} + +static inline void release_bus(GMouse* m) { + (void) m; + +} + +static void write_reg(GMouse* m, uint8_t reg, uint8_t val) { + uint8_t txbuf[2]; + (void) m; + + txbuf[0] = reg; + txbuf[1] = val; + + i2cAcquireBus(&I2CD3); + i2cMasterTransmitTimeout(&I2CD3, STMPE811_ADDR, txbuf, 2, 0, 0, MS2ST(STMPE811_TIMEOUT)); + i2cReleaseBus(&I2CD3); +} + +static uint8_t read_byte(GMouse* m, uint8_t reg) { + uint8_t rxbuf[1]; + (void) m; + + rxbuf[0] = 0; + + i2cAcquireBus(&I2CD3); + i2cMasterTransmitTimeout(&I2CD3, STMPE811_ADDR, ®, 1, rxbuf, 1, MS2ST(STMPE811_TIMEOUT)); + i2cReleaseBus(&I2CD3); + + return rxbuf[0]; +} + +static uint16_t read_word(GMouse* m, uint8_t reg) { + uint8_t rxbuf[2]; + (void) m; + + rxbuf[0] = 0; + rxbuf[1] = 0; + + i2cAcquireBus(&I2CD3); + i2cMasterTransmitTimeout(&I2CD3, STMPE811_ADDR, ®, 1, rxbuf, 2, MS2ST(STMPE811_TIMEOUT)); + i2cReleaseBus(&I2CD3); + + return (((uint16_t)rxbuf[0]) << 8) | rxbuf[1]; +} + +#endif /* _GINPUT_LLD_MOUSE_BOARD_H */ |