62 lines
1.3 KiB
C
62 lines
1.3 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.io/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 SPIConfig spicfg = {
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0,
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GPIOC,
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6,
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/* SPI_CR1_BR_2 |*/ SPI_CR1_BR_1 | SPI_CR1_BR_0,
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};
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static GFXINLINE void init_board(void)
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{
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palSetPadMode(GPIOC, 6, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOC, 4, PAL_MODE_INPUT);
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palSetPadMode(GPIOA, 5, PAL_MODE_ALTERNATE(5));
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palSetPadMode(GPIOA, 6, PAL_MODE_ALTERNATE(5));
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palSetPadMode(GPIOA, 7, PAL_MODE_ALTERNATE(5));
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spiStart(&SPID1, &spicfg);
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}
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static GFXINLINE gBool getpin_pressed(void)
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{
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return (!palReadPad(GPIOC, 4));
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}
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static GFXINLINE void aquire_bus(void)
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{
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spiAcquireBus(&SPID1);
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palClearPad(GPIOC, 6);
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}
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static GFXINLINE void release_bus(void)
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{
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palSetPad(GPIOC, 6);
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spiReleaseBus(&SPID1);
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}
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static GFXINLINE uint16_t read_value(uint16_t port)
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{
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static uint8_t txbuf[3] = {0};
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static uint8_t rxbuf[3] = {0};
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uint16_t ret;
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txbuf[0] = port;
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spiExchange(&SPID1, 3, txbuf, rxbuf);
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ret = (rxbuf[1] << 5) | (rxbuf[2] >> 3);
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return ret;
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}
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#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
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