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fix(spi): update examples after SPI rework #60

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Sep 5, 2024
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fix(spi): update examples after SPI rework #60

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48 changes: 30 additions & 18 deletions examples/NonReg/SPI_loop/SPI_loop.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -24,34 +24,46 @@
#warning "LED_BUILTIN is not defined."
#endif

#define MOSI_PIN PIN_SPI_MOSI
#define MISO_PIN PIN_SPI_MISO
#define SCK_PIN PIN_SPI_SCK
#define CS_PIN PIN_SPI_SS
/* Set to 1 if CS have to be managed by the hardware */
#define CS_HARDWARE_CONTROL 0

#define MOSI_PIN PIN_SPI_MOSI
#define MISO_PIN PIN_SPI_MISO
#define SCK_PIN PIN_SPI_SCK
#define CS_PIN PIN_SPI_SS

uint8_t buffer_tx[] = "Thequickbrownfoxjumpsoverthelazydog\0";
#define BUF_SIZE sizeof(buffer_tx)
#define BUF_SIZE sizeof(buffer_tx)
uint8_t buffer_rx[BUF_SIZE] = {};

/* SPI transfer loop nb */
#define TEST_LOOP_NB 9

void setup() {
uint8_t tested_ok = 0; // test result
uint8_t tested_ok = 0; // test result

SPI.setMOSI(MOSI_PIN);
SPI.setMISO(MISO_PIN);
SPI.setSCLK(SCK_PIN);
// Don't set CS_PIN to have Software ChipSelect management
// Instead, CS_PIN is passed as argument to SPI.transfer(CS_PIN)
// SPI.setSSEL(CS_PIN);
#if CS_HARDWARE_CONTROL == 1
SPI.setSSEL(CS_PIN);
#endif
#if CS_HARDWARE_CONTROL == 0
pinMode(CS_PIN, OUTPUT);
digitalWrite(CS_PIN, HIGH);
#endif

/* the SPI pin configuration is done by the SPI.begin */
SPI.begin(CS_PIN);
SPI.begin();

for (uint8_t received = 0; received < TEST_LOOP_NB; received++) {
SPI.transfer(CS_PIN, buffer_tx, buffer_rx, BUF_SIZE, SPI_LAST);

#if CS_HARDWARE_CONTROL == 0
digitalWrite(CS_PIN, LOW);
#endif
SPI.transfer(buffer_tx, buffer_rx, BUF_SIZE);
#if CS_HARDWARE_CONTROL == 0
digitalWrite(CS_PIN, HIGH);
#endif
/* compare what is received to what was sent */
if (!memcmp(buffer_tx, buffer_rx, BUF_SIZE)) {
/* this transfer passed */
Expand All @@ -60,14 +72,14 @@ void setup() {
memset(buffer_rx, 0, BUF_SIZE);
}
/* display test result */
pinMode(LED_BUILTIN, OUTPUT); // Configure LED pin, for test result
digitalWrite(LED_BUILTIN, LOW); // start with led off
pinMode(LED_BUILTIN, OUTPUT); // Configure LED pin, for test result
digitalWrite(LED_BUILTIN, LOW); // start with led off
if (tested_ok == TEST_LOOP_NB) {
/* success */
digitalWrite(LED_BUILTIN, HIGH);
/* success */
digitalWrite(LED_BUILTIN, HIGH);
} else {
/* error. Please verify MISO is externally connected to MOSI */
digitalWrite(LED_BUILTIN, LOW);
/* error. Please verify MISO is externally connected to MOSI */
digitalWrite(LED_BUILTIN, LOW);
}
}

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