57 lines
1.2 KiB
C++
57 lines
1.2 KiB
C++
// main.cpp
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#include "mbed.h"
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#define MAXIMUM_BUFFER_SIZE 32
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PwmOut led_pwm(LED1);
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DigitalIn button(PC_13);
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static BufferedSerial serial_port(USBTX, USBRX);
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int press_duty(int num_presses) {
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if (num_presses > 10) {
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num_presses = 0;
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}
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num_presses += 1;
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return num_presses;
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}
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int main()
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{
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serial_port.set_baud(9600);
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serial_port.set_format(
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/* bits */ 8,
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/* parity */ BufferedSerial::None,
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/* stop bit */ 1
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);
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char buf[MAXIMUM_BUFFER_SIZE] = {0};
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char msg[64];
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int num_presses = 1;
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float strieda = 0.0f;
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led_pwm.period(0.02f);
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led_pwm.write(0.50f);
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while (1) {
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float strieda = 0;
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if (uint32_t num = serial_port.read(buf, sizeof(buf))) {
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strieda = press_duty(num_presses)/10.0;
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led_pwm.write(strieda);
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int len = snprintf(msg, sizeof(msg), "strieda = %.3f\r\n", strieda);
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// serial_port.write(buf, len);
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// Echo the input back to the terminal.
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serial_port.write(buf, strieda);
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num_presses = press_duty(num_presses);
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while (num == 0) {
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ThisThread::sleep_for(10ms);
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}
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}
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ThisThread::sleep_for(150ms);
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}
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}
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