ugfx/drivers/touchpad/xpt2046_lld.c

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#include "xpt2046_lld.h"
#ifdef TOUCHPAD_USE_XPT2046
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__inline uint16_t lld_tpReadX(void) {
uint8_t txbuf[1];
uint8_t rxbuf[2];
uint16_t x;
txbuf[0] = 0xd0;
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TP_CS_LOW;
spiSend(&SPID1, 1, txbuf);
spiReceive(&SPID1, 2, rxbuf);
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TP_CS_HIGH;
x = rxbuf[0] << 4;
x |= rxbuf[1] >> 4;
return x;
}
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__inline uint16_t lld_tpReadY(void) {
uint8_t txbuf[1];
uint8_t rxbuf[2];
uint16_t y;
txbuf[0] = 0x90;
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TP_CS_LOW;
spiSend(&SPID1, 1, txbuf);
spiReceive(&SPID1, 2, rxbuf);
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TP_CS_HIGH;
y = rxbuf[0] << 4;
y |= rxbuf[1] >> 4;
return y;
}
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__inline uint16_t lld_tpReadZ(void) {
return 0;
}
#endif