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added driver for xpt2046 touchpad driver

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This commit is contained in:
Tectu 2012-06-15 10:19:34 +02:00
parent c7a393c6d7
commit 688cd9c879
2 changed files with 58 additions and 0 deletions
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43
drivers/xpt2046_lld.c Normal file
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#include "xpt2046_lld.h"
#ifdef TOUCHPAD_USE_XPT2046
__inline uint16_t lld_readX(void) {
uint8_t txbuf[1];
uint8_t rxbuf[2];
uint16_t x;
txbuf[0] = 0xd0;
SET_CS(0);
spiSend(&SPID1, 1, txbuf);
spiReceive(&SPID1, 2, rxbuf);
SET_CS(1);
x = rxbuf[0] << 4;
x |= rxbuf[1] >> 4;
return x;
}
__inline uint16_t lld_readY(void) {
uint8_t txbuf[1];
uint8_t rxbuf[2];
uint16_t y;
txbuf[0] = 0x90;
SET_CS(0);
spiSend(&SPID1, 1, txbuf);
spiReceive(&SPID1, 2, rxbuf);
SET_CS(1);
y = rxbuf[0] << 4;
y |= rxbuf[1] >> 4;
return y;
}
__inline uint16_t lld_readZ(void) {
return 0;
}
#endif

15
drivers/xpt2046_lld.h Normal file
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#ifndef XPT2046_LLD_H
#define XPT2046_LLD_H
#include "glcdconf.h"
#include "touchpad.h"
#ifdef TOUCHPAD_USE_XPT2046
uint16_t lld_readX(void);
uint16_t lld_readY(void);
uint16_t lld_readZ(void);
#endif
#endif