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// Copyright (c) 2018 Cirque Corp. Restrictions apply. See: www.cirque.com/sw-license
#include "cirque_pinnacle.h"
#include "spi_master.h"
#include "print.h"
#include "debug.h"
// Masks for Cirque Register Access Protocol (RAP)
#define WRITE_MASK 0x80
#define READ_MASK 0xA0
extern bool touchpad_init;
/* RAP Functions */
// Reads <count> Pinnacle registers starting at <address>
void RAP_ReadBytes(uint8_t address, uint8_t* data, uint8_t count) {
uint8_t cmdByte = READ_MASK | address; // Form the READ command byte
if (touchpad_init) {
if (spi_start(CIRQUE_PINNACLE_SPI_CS_PIN, CIRQUE_PINNACLE_SPI_LSBFIRST, CIRQUE_PINNACLE_SPI_MODE, CIRQUE_PINNACLE_SPI_DIVISOR)) {
spi_write(cmdByte);
spi_read(); // filler
spi_read(); // filler
for (uint8_t i = 0; i < count; i++) {
data[i] = spi_read(); // each sepsequent read gets another register's contents
}
} else {
#ifdef CONSOLE_ENABLE
dprintf("error right touchpad\n");
#endif
touchpad_init = false;
}
spi_stop();
}
}
// Writes single-byte <data> to <address>
void RAP_Write(uint8_t address, uint8_t data) {
uint8_t cmdByte = WRITE_MASK | address; // Form the WRITE command byte
if (touchpad_init) {
if (spi_start(CIRQUE_PINNACLE_SPI_CS_PIN, CIRQUE_PINNACLE_SPI_LSBFIRST, CIRQUE_PINNACLE_SPI_MODE, CIRQUE_PINNACLE_SPI_DIVISOR)) {
spi_write(cmdByte);
spi_write(data);
} else {
#ifdef CONSOLE_ENABLE
dprintf("error right touchpad\n");
#endif
touchpad_init = false;
}
spi_stop();
}
}
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