mbed-os/features/unsupported/tests/mbed/pwm_led/pwm.cpp

63 lines
1.6 KiB
C++

#include "mbed.h"
#if defined(TARGET_K64F) || defined(TARGET_K66F)
#define TEST_LED D9
#elif defined(TARGET_NUCLEO_F030R8) || \
defined(TARGET_NUCLEO_F070RB) || \
defined(TARGET_NUCLEO_F072RB) || \
defined(TARGET_NUCLEO_F091RC) || \
defined(TARGET_NUCLEO_F103RB) || \
defined(TARGET_NUCLEO_F302R8) || \
defined(TARGET_NUCLEO_F303RE) || \
defined(TARGET_NUCLEO_F334R8) || \
defined(TARGET_NUCLEO_F401RE) || \
defined(TARGET_NUCLEO_F410RB) || \
defined(TARGET_NUCLEO_F411RE) || \
defined(TARGET_NUCLEO_L053R8) || \
defined(TARGET_NUCLEO_L073RZ) || \
defined(TARGET_NUCLEO_L152RE)
#define TEST_LED D3
#elif defined (TARGET_K22F) || \
defined(TARGET_KL27Z) || \
defined (TARGET_LPC824)
#define TEST_LED LED_GREEN
#elif defined (TARGET_MAXWSNENV)
#define TEST_LED LED_GREEN
#elif defined (TARGET_DISCO_F407VG)
#define TEST_LED LED1
#elif defined(TARGET_SAMR21G18A) || defined(TARGET_SAMD21J18A) || defined(TARGET_SAMD21G18A) || defined(TARGET_SAML21J18A)
#define TEST_LED LED1
#elif defined(TARGET_SAMG55J19)
#define TEST_LED PA01 /*LED in board doesnt have PWM functionality*/
#else
#error [NOT_SUPPORTED] This test is not supported on this target
#endif
PwmOut led(TEST_LED);
int main() {
float crt = 1.0, delta = 0.05;
led.period_ms(2); // 500Hz
while (true) {
led.write(crt);
wait_ms(50);
crt = crt + delta;
if (crt > 1.0) {
crt = 1.0;
delta = -delta;
}
else if (crt < 0) {
crt = 0;
delta = -delta;
}
}
}