You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
1.5 KiB
83 lines
1.5 KiB
#include "spi_ch.h"
|
|
|
|
// generic implementation of spi channel class
|
|
|
|
|
|
uint8_t spiCH_readReg(spi_ch_t *spi_ch,
|
|
uint8_t reg_address) {
|
|
uitn8_t buf;
|
|
|
|
// select target device
|
|
pinWrite(spi_ch->pin,0);
|
|
|
|
// send address of target register
|
|
spi_trx(spi_ch->spi, reg_address);
|
|
|
|
// read from target register
|
|
buf = spi_trx(spi->spi,0x00);
|
|
|
|
// release target device
|
|
pinWrite(spi_ch->pin,1);
|
|
|
|
return buf;
|
|
}
|
|
|
|
void spiCH_autoReadBlock(spi_ch_t *spi_ch,
|
|
uint8_t start_address,
|
|
uint8_t* buffer,
|
|
uint8_t buf_len) {
|
|
uint8_t i = 0;
|
|
|
|
// select target device
|
|
pinWrite(spi_ch->pin,0);
|
|
|
|
// send address of starting register
|
|
spi_trx(spi_ch->spi, reg_address);
|
|
|
|
// read block from device
|
|
for(;i < buf_len;i++) {
|
|
buffer[i] = spi_trx(spi_ch->spi, 0x00);
|
|
}
|
|
|
|
// release target device
|
|
pinWrite(spi_ch->pin,1);
|
|
}
|
|
|
|
void spiCH_writeReg(spi_ch_t *spi_ch,
|
|
uint8_t reg_address,
|
|
uint8_t data) {
|
|
// select target device
|
|
pinWrite(spi_ch->pin,0);
|
|
|
|
// send address of target register
|
|
spi_trx(spi_ch->spi, reg_address);
|
|
|
|
// write to target register
|
|
spi_trx(spi->spi, data);
|
|
|
|
// release target device
|
|
pinWrite(spi_ch->pin,1);
|
|
}
|
|
|
|
void spiCH_writeBlock(spi_ch_t *spi_ch,
|
|
uint8_t start_address,
|
|
const uint8_t *data,
|
|
uint8_t data_len) {
|
|
uint8_t i = 0;
|
|
|
|
// select target device
|
|
pinWrite(spi_ch->pin,0);
|
|
|
|
// send address of starting register
|
|
spi_trx(spi_ch->spi, reg_address);
|
|
|
|
// read block from device
|
|
for(;i < buf_len;i++) {
|
|
spi_trx(spi_ch->spi, data[i]);
|
|
}
|
|
|
|
// release target device
|
|
pinWrite(spi_ch->pin,1);
|
|
}
|
|
|