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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
/*
* uGFX port used: ChibiOS/RT
* SPI port: SPI2
* CS: GPIOC, 4
* IRC: GPIOC, 5
*
* Note that you can tweak the SPI bus speed
*/
static const SPIConfig spicfg = {
NULL,
GPIOC,
4,
/* SPI_CR1_BR_2 |*/ SPI_CR1_BR_1 | SPI_CR1_BR_0,
};
static inline void init_board(void) {
palSetPadMode(GPIOB, 13, PAL_MODE_ALTERNATE(5) ); /* SCK */
palSetPadMode(GPIOB, 14, PAL_MODE_ALTERNATE(5) ); /* MISO */
palSetPadMode(GPIOB, 15, PAL_MODE_ALTERNATE(5) ); /* MOSI */
palSetPadMode(GPIOC, 4, PAL_MODE_OUTPUT_PUSHPULL); /* CS */
spiStart(&SPID2, &spicfg);
}
static inline bool_t getpin_pressed(void) {
return (!palReadPad(GPIOC, 5));
}
static inline void aquire_bus(void) {
spiAcquireBus(&SPID2);
palClearPad(GPIOC, 4);
}
static inline void release_bus(void) {
palSetPad(GPIOC, 4);
spiReleaseBus(&SPID2);
}
static inline uint16_t read_value(uint16_t port) {
static uint8_t txbuf[3] = {0};
static uint8_t rxbuf[3] = {0};
uint16_t ret;
txbuf[0] = port;
spiExchange(&SPID2, 3, txbuf, rxbuf);
ret = (rxbuf[1] << 5) | (rxbuf[2] >> 3);
return ret;
}
#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
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