learning-by-doing/tdd_for_embedded_c/chapter04/src/LedDriver.c

#include "LedDriver.h"



static uint16_t *ledsAddress;


static uint16_t convertLedNumberToBit(int ledNumber) {
  return 1 << (ledNumber - 1);
}


void LedDriver_Create(uint16_t *address) {
  ledsAddress = address;
  *ledsAddress = 0x0000;
}


void LedDriver_Destroy(uint16_t *address) {
}


void LedDriver_TurnOn(int ledNumber) {
  *ledsAddress |= convertLedNumberToBit(ledNumber);
}


void LedDriver_TurnOff(int ledNumber) {
  *ledsAddress = 0x0000;
}