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tetrisbuzzer.c
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/*----------------------------------------------------------------------------
* CMSIS-RTOS 'main' function template
*---------------------------------------------------------------------------*/
#include "MKL25Z4.h"
#include "RTE_Components.h"
#include CMSIS_device_header
#include "cmsis_os2.h"
#define MASK(x) (1 << (x))
#define RED_LED 18 // PortB Pin 18
#define GREEN_LED 19 // PortB Pin 19
#define BLUE_LED 1 // PortD Pin 1
#define TOP_LEFT_WHEEL_1 30 // PORT E pin 30 CH2
#define TOP_LEFT_WHEEL_2 29 // PORT E pin 29 CH3
#define IR_SENSOR 13 // PORT A pin 1
#define GREEN_1 7// port C pin 7
#define GREEN_2 0// port C pin 0
#define GREEN_3 3// port C pin 3
#define GREEN_4 4// port C pin 4
#define GREEN_5 5// port C pin 5
#define GREEN_6 6// port C pin 6
#define GREEN_7 10// port C pin 10
#define GREEN_8 11// port C pin 11
#define GREEN_9 12// port C pin 12
#define GREEN_10 13// port C pin 13
#define delayGreen 0x100 // for green strip how fast u wan
#define TO_MOD(x) 375000/(x)
#define PTB0_Pin 0
#define PTB1_Pin 1
#define BUZZER 31 // port e pin 31
/*************************************************
* Public Constants
*************************************************/
#define NOTE_B0 31
#define NOTE_C1 33
#define NOTE_CS1 35
#define NOTE_D1 37
#define NOTE_DS1 39
#define NOTE_E1 41
#define NOTE_F1 44
#define NOTE_FS1 46
#define NOTE_G1 49
#define NOTE_GS1 52
#define NOTE_A1 55
#define NOTE_AS1 58
#define NOTE_B1 62
#define NOTE_C2 65
#define NOTE_CS2 69
#define NOTE_D2 73
#define NOTE_DS2 78
#define NOTE_E2 82
#define NOTE_F2 87
#define NOTE_FS2 93
#define NOTE_G2 98
#define NOTE_GS2 104
#define NOTE_A2 110
#define NOTE_AS2 117
#define NOTE_B2 123
#define NOTE_C3 131
#define NOTE_CS3 139
#define NOTE_D3 147
#define NOTE_DS3 156
#define NOTE_E3 165
#define NOTE_F3 175
#define NOTE_FS3 185
#define NOTE_G3 196
#define NOTE_GS3 208
#define NOTE_A3 220
#define NOTE_AS3 233
#define NOTE_B3 247
#define NOTE_C4 262
#define NOTE_CS4 277
#define NOTE_D4 294
#define NOTE_DS4 311
#define NOTE_E4 330
#define NOTE_F4 349
#define NOTE_FS4 370
#define NOTE_G4 392
#define NOTE_GS4 415
#define NOTE_A4 440
#define NOTE_AS4 466
#define NOTE_B4 494
#define NOTE_C5 523
#define NOTE_CS5 554
#define NOTE_D5 587
#define NOTE_DS5 622
#define NOTE_E5 659
#define NOTE_F5 698
#define NOTE_FS5 740
#define NOTE_G5 784
#define NOTE_GS5 831
#define NOTE_A5 880
#define NOTE_AS5 932
#define NOTE_B5 988
#define NOTE_C6 1047
#define NOTE_CS6 1109
#define NOTE_D6 1175
#define NOTE_DS6 1245
#define NOTE_E6 1319
#define NOTE_F6 1397
#define NOTE_FS6 1480
#define NOTE_G6 1568
#define NOTE_GS6 1661
#define NOTE_A6 1760
#define NOTE_AS6 1865
#define NOTE_B6 1976
#define NOTE_C7 2093
#define NOTE_CS7 2217
#define NOTE_D7 2349
#define NOTE_DS7 2489
#define NOTE_E7 2637
#define NOTE_F7 2794
#define NOTE_FS7 2960
#define NOTE_G7 3136
#define NOTE_GS7 3322
#define NOTE_A7 3520
#define NOTE_AS7 3729
#define NOTE_B7 3951
#define NOTE_C8 4186
#define NOTE_CS8 4435
#define NOTE_D8 4699
#define NOTE_AS 455
#define NOTE_DS8 4978
#define REST 0
// change this to whichever pin you want to use
int tetris_melody[] = {
//Based on the arrangement at https://www.flutetunes.com/tunes.php?id=192
NOTE_E5, 4, NOTE_B4,8, NOTE_C5,8, NOTE_D5,4, NOTE_C5,8, NOTE_B4,8,
NOTE_A4, 4, NOTE_A4,8, NOTE_C5,8, NOTE_E5,4, NOTE_D5,8, NOTE_C5,8,
NOTE_B4, -4, NOTE_C5,8, NOTE_D5,4, NOTE_E5,4,
NOTE_C5, 4, NOTE_A4,4, NOTE_A4,8, NOTE_A4,4, NOTE_B4,8, NOTE_C5,8,
NOTE_D5, -4, NOTE_F5,8, NOTE_A5,4, NOTE_G5,8, NOTE_F5,8,
NOTE_E5, -4, NOTE_C5,8, NOTE_E5,4, NOTE_D5,8, NOTE_C5,8,
NOTE_B4, 4, NOTE_B4,8, NOTE_C5,8, NOTE_D5,4, NOTE_E5,4,
NOTE_C5, 4, NOTE_A4,4, NOTE_A4,4, REST, 4,
NOTE_E5, 4, NOTE_B4,8, NOTE_C5,8, NOTE_D5,4, NOTE_C5,8, NOTE_B4,8,
NOTE_A4, 4, NOTE_A4,8, NOTE_C5,8, NOTE_E5,4, NOTE_D5,8, NOTE_C5,8,
NOTE_B4, -4, NOTE_C5,8, NOTE_D5,4, NOTE_E5,4,
NOTE_C5, 4, NOTE_A4,4, NOTE_A4,8, NOTE_A4,4, NOTE_B4,8, NOTE_C5,8,
NOTE_D5, -4, NOTE_F5,8, NOTE_A5,4, NOTE_G5,8, NOTE_F5,8,
NOTE_E5, -4, NOTE_C5,8, NOTE_E5,4, NOTE_D5,8, NOTE_C5,8,
NOTE_B4, 4, NOTE_B4,8, NOTE_C5,8, NOTE_D5,4, NOTE_E5,4,
NOTE_C5, 4, NOTE_A4,4, NOTE_A4,4, REST, 4,
NOTE_E5,2, NOTE_C5,2,
NOTE_D5,2, NOTE_B4,2,
NOTE_C5,2, NOTE_A4,2,
NOTE_GS4,2, NOTE_B4,4, REST,8,
NOTE_E5,2, NOTE_C5,2,
NOTE_D5,2, NOTE_B4,2,
NOTE_C5,4, NOTE_E5,4, NOTE_A5,2,
NOTE_GS5,2,
};
void initPWM()
{
//enable clock for port B
SIM_SCGC5 |= SIM_SCGC5_PORTE_MASK;
//enable pin output and set mux TO 3 to use alt 3 for time in port b 01 n 1
PORTE->PCR[BUZZER] &= ~PORT_PCR_MUX_MASK;
PORTE->PCR[BUZZER] |= PORT_PCR_MUX(3);
//enable clock gating for timer module
SIM->SCGC6 |= SIM_SCGC6_TPM0_MASK;
//Select clock used
SIM->SOPT2 &= ~SIM_SOPT2_TPMSRC_MASK;
SIM->SOPT2 |= SIM_SOPT2_TPMSRC(1);
// edge aligned pwm
//ps: 111(128) and CMOD=01
TPM0->SC &= ~((TPM_SC_CMOD_MASK | (TPM_SC_PS_MASK)));
TPM0->SC |= (TPM_SC_CMOD(1) | (TPM_SC_PS(7)));
// set to up counting
TPM0->SC &= ~(TPM_SC_CPWMS_MASK);
// Enable PWM on TPM1 channe; 0 -> PTB0
//start from high output first
TPM0_C4SC &= ~((TPM_CnSC_ELSB_MASK) | (TPM_CnSC_ELSA_MASK) | (TPM_CnSC_MSB_MASK) | (TPM_CnSC_MSA_MASK) );
TPM0_C4SC |= (TPM_CnSC_ELSB(1) | TPM_CnSC_MSB(1));
}
// change this to make the song slower or faster
int tempo_tetris=144;
int notes = sizeof(tetris_melody) / sizeof(tetris_melody[0]) / 2;
int divider = 0, noteDuration = 0;
void setFreq(int freq)
{
if(freq == 0)
{
TPM0_C4V = (unsigned int) 0;
return;
}
int newMod = 375000.0 / freq;
// Update TPM0's MOD
TPM0->MOD = (unsigned int) newMod;
// Update C0V for the buzzer
TPM0_C4V = (unsigned int) (newMod * 0.5);
}
int isPlaying() {
return (TPM0_C4V == (unsigned int) 0);
}
void thread_buzzer (void *argument) {
for (;;) {
int wholenote = (60000 * 4) / tempo_tetris;
for (int thisNote = 0; thisNote < notes * 2; thisNote = thisNote + 2) {
// calculates the duration of each note
divider = tetris_melody[thisNote + 1];
if (divider > 0) {
// regular note, just proceed
noteDuration = (wholenote) / divider;
} else if (divider < 0) {
// dotted notes are represented with negative durations!!
noteDuration = (wholenote) / (divider*-1);
noteDuration *= 1.5; // increases the duration in half for dotted notes
}
// we only play the note for 90% of the duration, leaving 10% as a pause
setFreq( tetris_melody[thisNote]);
osDelay(noteDuration * 0.9);
// Wait for the specief duration before playing the next note.
osDelay(noteDuration);
// stop the waveform generation before the next note.
setFreq(0);
osDelay(10);
}
}
}
int main (void) {
// System Initialization
SystemCoreClockUpdate();
initPWM();
//initGreenStrip();
osThreadNew(thread_buzzer, NULL, NULL);
osKernelStart(); // Start thread execution
for (;;) {}
}