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esp32_Adafruit_BusIO
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fix wrong exmaple

This commit is contained in:
Ladyada 2019-08-29 15:00:58 -04:00
parent ef1a09d38f
commit 85577e9f2e
1 changed files with 10 additions and 12 deletions
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22
examples/spi_readwrite/i2c_readwrite.ino → examples/spi_readwrite/spi_readwrite.ino
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@ -1,25 +1,23 @@
#include <Adafruit_I2CDevice.h>
#include <Adafruit_SPIDevice.h>
#define I2C_ADDRESS 0x60
Adafruit_I2CDevice i2c_dev = Adafruit_I2CDevice(I2C_ADDRESS);
#define SPIDEVICE_CS 10
Adafruit_SPIDevice spi_dev = Adafruit_SPIDevice(SPIDEVICE_CS);
void setup() {
while (!Serial) { delay(10); }
Serial.begin(115200);
Serial.println("I2C device read and write test");
Serial.println("SPI device read and write test");
if (!i2c_dev.begin()) {
Serial.print("Did not find device at 0x");
Serial.println(i2c_dev.address(), HEX);
if (!spi_dev.begin()) {
Serial.println("Could not initialize SPI device");
while (1);
}
Serial.print("Device found on address 0x");
Serial.println(i2c_dev.address(), HEX);
uint8_t buffer[32];
// Try to read 32 bytes
i2c_dev.read(buffer, 32);
spi_dev.read(buffer, 32);
Serial.print("Read: ");
for (uint8_t i=0; i<32; i++) {
Serial.print("0x"); Serial.print(buffer[i], HEX); Serial.print(", ");
@ -27,8 +25,8 @@ void setup() {
Serial.println();
// read a register by writing first, then reading
buffer[0] = 0x0C; // we'll reuse the same buffer
i2c_dev.write_then_read(buffer, 1, buffer, 2, false);
buffer[0] = 0x8F; // we'll reuse the same buffer
spi_dev.write_then_read(buffer, 1, buffer, 2, false);
Serial.print("Write then Read: ");
for (uint8_t i=0; i<2; i++) {
Serial.print("0x"); Serial.print(buffer[i], HEX); Serial.print(", ");