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esp32_Adafruit_BusIO
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allow a register to be i2c or spi

This commit is contained in:
ladyada 2019-05-18 02:47:48 -04:00
parent 675ab5eaf4
commit 805c5f5033
3 changed files with 59 additions and 0 deletions
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13
Adafruit_BusIO_Register.cpp
View File

@ -22,6 +22,19 @@ Adafruit_BusIO_Register::Adafruit_BusIO_Register(Adafruit_SPIDevice *spidevice,
_width = width;
}
Adafruit_BusIO_Register::Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice, Adafruit_SPIDevice *spidevice,
uint16_t reg_addr, Adafruit_BusIO_SPIRegType type,
uint8_t width, uint8_t bitorder, uint8_t address_width) {
_spidevice = spidevice;
_i2cdevice = i2cdevice;
_spiregtype = type;
_addrwidth = address_width;
_address = reg_addr;
_bitorder = bitorder;
_width = width;
}
bool Adafruit_BusIO_Register::write(uint8_t *buffer, uint8_t len) {
uint8_t addrbuffer[2] = {(uint8_t)(_address & 0xFF), (uint8_t)(_address>>8)};

8
Adafruit_BusIO_Register.h
View File

@ -19,6 +19,14 @@ class Adafruit_BusIO_Register {
Adafruit_BusIO_SPIRegType type,
uint8_t width=1, uint8_t bitorder=LSBFIRST,
uint8_t address_width=1);
Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice,
Adafruit_SPIDevice *spidevice,
uint16_t reg_addr,
Adafruit_BusIO_SPIRegType type,
uint8_t width=1, uint8_t bitorder=LSBFIRST,
uint8_t address_width=1);
bool read(uint8_t *buffer, uint8_t len);
bool read(uint8_t *value);
bool read(uint16_t *value);

38
examples/i2corspi_register/i2corspi_register.ino Normal file
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@ -0,0 +1,38 @@
#include <Adafruit_BusIO_Register.h>
// Define which interface to use by setting the unused interface to NULL!
#define SPIDEVICE_CS 10
Adafruit_SPIDevice *spi_dev = NULL; // new Adafruit_SPIDevice(SPIDEVICE_CS);
#define I2C_ADDRESS 0x5D
Adafruit_I2CDevice *i2c_dev = new Adafruit_I2CDevice(I2C_ADDRESS);
void setup() {
while (!Serial) { delay(10); }
Serial.begin(115200);
Serial.println("I2C or SPI device register test");
if (spi_dev && !spi_dev->begin()) {
Serial.println("Could not initialize SPI device");
}
if (i2c_dev) {
if (i2c_dev->begin()) {
Serial.print("Device found on I2C address 0x");
Serial.println(i2c_dev->address(), HEX);
} else {
Serial.print("Did not find I2C device at 0x");
Serial.println(i2c_dev->address(), HEX);
}
}
Adafruit_BusIO_Register id_reg = Adafruit_BusIO_Register(i2c_dev, spi_dev, 0x0F, ADDRBIT8_HIGH_TOREAD);
uint8_t id;
id_reg.read(&id);
Serial.print("ID register = 0x"); Serial.println(id, HEX);
}
void loop() {
}