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/*
* 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(GPIOC, 13, PAL_MODE_INPUT | PAL_STM32_PUDR_FLOATING); /* TP IRQ */
palSetPadMode(GPIOB, 8, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN); /* SCL */
palSetPadMode(GPIOB, 9, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN); /* SDA */
i2cStart(&I2CD1, &i2ccfg);
return TRUE;
}
#if GMOUSE_STMPE811_GPIO_IRQPIN
static bool_t getpin_irq(GMouse* m) {
(void) m;
return !palReadPad(GPIOC, 13);
}
#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(&I2CD1);
i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, txbuf, 2, 0, 0, MS2ST(STMPE811_TIMEOUT));
i2cReleaseBus(&I2CD1);
}
static uint8_t read_byte(GMouse* m, uint8_t reg) {
uint8_t rxbuf[1];
(void) m;
rxbuf[0] = 0;
i2cAcquireBus(&I2CD1);
i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, ®, 1, rxbuf, 1, MS2ST(STMPE811_TIMEOUT));
i2cReleaseBus(&I2CD1);
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(&I2CD1);
i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, ®, 1, rxbuf, 2, MS2ST(STMPE811_TIMEOUT));
i2cReleaseBus(&I2CD1);
return (((uint16_t)rxbuf[0]) << 8) | rxbuf[1];
}
#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
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