35 lines
982 B
Arduino
35 lines
982 B
Arduino
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#include <SPI.h>
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#include "wiring_private.h" // pinPeripheral() function
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// DOCUMENTACIÓN AQUI:
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// https://learn.adafruit.com/using-atsamd21-sercom-to-add-more-spi-i2c-serial-ports?view=all
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// SPIClass SPI (&PERIPH_SPI, PIN_SPI_MISO, PIN_SPI_SCK, PIN_SPI_MOSI, PAD_SPI_TX, PAD_SPI_RX);
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// SPI_PAD_0_SCK_3 means MOSI is on SERCOMn.0 and SCK is on SERCOMn.3
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// SERCOM_RX_PAD_1 means MISO on SERCOMn.1
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SPIClass mySPI (&sercom2, 3, 5, 4, SPI_PAD_0_SCK_3, SERCOM_RX_PAD_1);
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// https://github.com/adafruit/Adafruit_DotStar/pull/20
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void setup() {
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Serial.begin(115200);
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// do this first, for Reasons
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mySPI.begin();
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// Assign pins 3, 4, 5 to SERCOM & SERCOM_ALT
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pinPeripheral(3, PIO_SERCOM_ALT); // MISO
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pinPeripheral(4, PIO_SERCOM_ALT); // SCK
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pinPeripheral(5, PIO_SERCOM); // MOSI
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}
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uint8_t i=0;
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void loop() {
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Serial.println(i);
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mySPI.beginTransaction(SPISettings(8000000, MSBFIRST, SPI_MODE0));
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mySPI.transfer(i++);
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mySPI.endTransaction();
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}
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