octoliner-device
amperka/octoliner/octoliner-device
Constructs an octoliner-device value for the Amperka Octoliner.
Possible errors:
— Invalid I2C address
octoliner-device
@/octoliner-device
Constructs an octoliner-device value for the Amperka Octoliner.
Possible errors:
— Invalid I2C address
I2Cxod/i2c/i2c
ADDRbyte
I²C address. 2Ah by default.
DEV@/octoliner-device
C++ implementation
#pragma XOD require "https://github.com/amperka/I2CioExpander"
#pragma XOD error_raise enable
// clang-format off
{{#global}}
#include <GpioExpander.h>
{{/global}}
// clang-format on
struct State {
uint8_t mem[sizeof(GpioExpander)];
};
using Type = GpioExpander*;
// clang-format off
{{ GENERATED_CODE }}
// clang-format on
void evaluate(Context ctx) {
if (!isSettingUp()) return;
auto state = getState(ctx);
uint8_t addr = getValue<input_ADDR>(ctx);
if (addr > 127) {
raiseError(ctx); // Invalid I2C address
return;
}
TwoWire* i2c = getValue<input_I2C>(ctx);
Type octoliner = new (state->mem) GpioExpander(addr);
octoliner->begin(i2c);
octoliner->pwmFreq(8000);
emitValue<output_DEV>(ctx, octoliner);
}