DigitalInfinity/ESP32-PaxCounter
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SPI wire interface (experimental)

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This commit is contained in:
Klaus K Wilting 2018-10-27 21:38:08 +02:00
parent 16759c4dd5
commit 00b1faab83
1 changed files with 11 additions and 13 deletions
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24
src/spisend.cpp
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@ -41,34 +41,32 @@ void spi_loop(void *pvParameters) {
void hal_spi_init() { SPI.begin(SCK, MISO, MOSI, SS); }
void hal_spi_trx(u1_t cmd, u1_t *buf, int len, u1_t is_read) {
void hal_spi_trx(uint8_t port, uint8_t *buf, int len, uint8_t is_read) {
u1_t nss = SS;
SPISettings settings(1E6, MSBFIRST, SPI_MODE0);
SPI.beginTransaction(settings);
digitalWrite(SS, 0);
digitalWrite(nss, 0);
SPI.transfer(port);
SPI.transfer(cmd);
for (u1_t i = 0; i < len; i++) {
u1_t *p = buf + i;
u1_t data = is_read ? 0x00 : *p;
for (uint8_t i = 0; i < len; i++) {
uint8_t *p = buf + i;
uint8_t data = is_read ? 0x00 : *p;
data = SPI.transfer(data);
if (is_read)
*p = data;
}
digitalWrite(nss, 1);
digitalWrite(SS, 1);
SPI.endTransaction();
}
void hal_spi_write(u1_t cmd, const u1_t *buf, int len) {
hal_spi_trx(cmd, (u1_t *)buf, len, 0);
void hal_spi_write(uint8_t port, const uint8_t *buf, int len) {
hal_spi_trx(port, (uint8_t *)buf, len, 0);
}
void hal_spi_read(u1_t cmd, u1_t *buf, int len) {
hal_spi_trx(cmd, buf, len, 1);
void hal_spi_read(uint8_t port, uint8_t *buf, int len) {
hal_spi_trx(port, buf, len, 1);
}
#endif // HAS_SPI