89 lines
1.9 KiB
C
89 lines
1.9 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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static const I2CConfig i2ccfg = {
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OPMODE_I2C,
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400000,
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FAST_DUTY_CYCLE_2,
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};
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static void init_board(void)
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{
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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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}
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static inline bool_t getpin_irq(void)
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{
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return (!(palReadPad(GPIOC, 13)));
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}
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static void write_reg(uint8_t reg, uint8_t n, uint16_t val)
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{
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uint8_t txbuf[3];
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i2cAcquireBus(&I2CD1);
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txbuf[0] = reg;
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if (n == 1) {
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txbuf[1] = val;
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i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, txbuf, 2, NULL, 0, MS2ST(STMPE811_TIMEOUT));
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} else if (n == 2) {
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txbuf[1] = ((val & 0xFF00) >> 8);
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txbuf[2] = (val & 0x00FF);
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i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, txbuf, 3, NULL, 0, MS2ST(STMPE811_TIMEOUT));
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}
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i2cReleaseBus(&I2CD1);
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}
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static uint16_t read_reg(uint8_t reg, uint8_t n)
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{
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uint8_t txbuf[1], rxbuf[2];
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uint16_t ret;
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rxbuf[0] = 0;
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rxbuf[1] = 0;
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i2cAcquireBus(&I2CD1);
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txbuf[0] = reg;
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i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, txbuf, 1, rxbuf, n, MS2ST(STMPE811_TIMEOUT));
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if (n == 1) {
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ret = rxbuf[0];
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} else if (n == 2) {
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ret = ((rxbuf[0] << 8) | (rxbuf[1] & 0xFF));
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}
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i2cReleaseBus(&I2CD1);
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return ret;
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}
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static void read_reg_n(uint8_t reg, uint8_t n, uint8_t *rxbuf)
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{
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uint8_t txbuf[1];
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i2cAcquireBus(&I2CD1);
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txbuf[0] = reg;
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i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, txbuf, 1, rxbuf, n, MS2ST(STMPE811_TIMEOUT));
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i2cReleaseBus(&I2CD1);
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}
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#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
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