120 lines
3.0 KiB
C
120 lines
3.0 KiB
C
/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.org/license.html
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*/
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#ifndef _GINPUT_LLD_MOUSE_BOARD_H
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#define _GINPUT_LLD_MOUSE_BOARD_H
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// Resolution and Accuracy Settings
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#define GMOUSE_STMPE811_PEN_CALIBRATE_ERROR 8
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#define GMOUSE_STMPE811_PEN_CLICK_ERROR 6
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#define GMOUSE_STMPE811_PEN_MOVE_ERROR 4
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#define GMOUSE_STMPE811_FINGER_CALIBRATE_ERROR 14
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#define GMOUSE_STMPE811_FINGER_CLICK_ERROR 18
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#define GMOUSE_STMPE811_FINGER_MOVE_ERROR 14
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// How much extra data to allocate at the end of the GMouse structure for the board's use
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#define GMOUSE_STMPE811_BOARD_DATA_SIZE 0
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// Options - Leave these commented to make it user configurable in the gfxconf.h
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//#define GMOUSE_STMPE811_READ_PRESSURE FALSE
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//#define GMOUSE_STMPE811_SELF_CALIBRATE FALSE
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//#define GMOUSE_STMPE811_TEST_MODE FALSE
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// If TRUE this board has the STMPE811 IRQ pin connected to a GPIO.
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// Note: Although this board has such a pin its reliability has not been tested on this board!!!!!
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#define GMOUSE_STMPE811_GPIO_IRQPIN FALSE
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// If TRUE this is a really slow CPU and we should always clear the FIFO between reads.
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#define GMOUSE_STMPE811_SLOW_CPU FALSE
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// Slave address
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#define STMPE811_ADDR (0x82 >> 1)
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// Maximum timeout
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#define STMPE811_TIMEOUT 0x3000
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static const I2CConfig i2ccfg = {
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OPMODE_I2C,
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200000, // Conservative please
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FAST_DUTY_CYCLE_2,
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};
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static bool_t init_board(GMouse* m, unsigned driverinstance) {
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(void) m;
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// This board only supports one touch panel
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if (driverinstance)
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return FALSE;
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palSetPadMode(GPIOC, 13, PAL_MODE_INPUT | PAL_STM32_PUDR_FLOATING); /* TP IRQ */
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palSetPadMode(GPIOB, 8, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN); /* SCL */
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palSetPadMode(GPIOB, 9, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN); /* SDA */
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i2cStart(&I2CD1, &i2ccfg);
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return TRUE;
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}
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#if GMOUSE_STMPE811_GPIO_IRQPIN
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static bool_t getpin_irq(GMouse* m) {
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(void) m;
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return !palReadPad(GPIOC, 13);
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}
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#endif
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static GFXINLINE void aquire_bus(GMouse* m) {
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(void) m;
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}
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static GFXINLINE void release_bus(GMouse* m) {
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(void) m;
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}
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static void write_reg(GMouse* m, uint8_t reg, uint8_t val) {
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uint8_t txbuf[2];
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(void) m;
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txbuf[0] = reg;
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txbuf[1] = val;
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i2cAcquireBus(&I2CD1);
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i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, txbuf, 2, 0, 0, MS2ST(STMPE811_TIMEOUT));
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i2cReleaseBus(&I2CD1);
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}
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static uint8_t read_byte(GMouse* m, uint8_t reg) {
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uint8_t rxbuf[1];
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(void) m;
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rxbuf[0] = 0;
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i2cAcquireBus(&I2CD1);
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i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, ®, 1, rxbuf, 1, MS2ST(STMPE811_TIMEOUT));
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i2cReleaseBus(&I2CD1);
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return rxbuf[0];
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}
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static uint16_t read_word(GMouse* m, uint8_t reg) {
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uint8_t rxbuf[2];
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(void) m;
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rxbuf[0] = 0;
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rxbuf[1] = 0;
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i2cAcquireBus(&I2CD1);
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i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, ®, 1, rxbuf, 2, MS2ST(STMPE811_TIMEOUT));
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i2cReleaseBus(&I2CD1);
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return (((uint16_t)rxbuf[0]) << 8) | rxbuf[1];
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}
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#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
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