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[Bug] Updated Cirque Pinnacle SPI driver to read data correctly (#17074)

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Kyle McCreery 2022-05-13 02:21:25 -04:00 committed by GitHub
parent 58c37c0814
commit c199514372
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 4 deletions
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9
drivers/sensors/cirque_pinnacle_spi.c
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@ -7,6 +7,7 @@
// Masks for Cirque Register Access Protocol (RAP)
#define WRITE_MASK 0x80
#define READ_MASK 0xA0
#define FILLER_BYTE 0xFC
extern bool touchpad_init;
@ -16,11 +17,11 @@ 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
spi_write(cmdByte); // write command byte, receive filler
spi_write(FILLER_BYTE); // write & receive filler
spi_write(FILLER_BYTE); // write & receive filler
for (uint8_t i = 0; i < count; i++) {
data[i] = spi_read(); // each sepsequent read gets another register's contents
data[i] = spi_write(FILLER_BYTE); // write filler, receive data on the third filler send
}
} else {
#ifdef CONSOLE_ENABLE