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PWM2 on the new board

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BIITER 2011-04-22 15:41:35 +02:00
parent 031e3c1a7e
commit a63c511ee8
3 changed files with 48 additions and 12 deletions
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57
firmware/src/edubrm.c
View file

@ -28,28 +28,28 @@ void SetOutReport (uint8_t dst[], uint32_t length)
case 'p':
which = dst[1];
duty = dst[2] + (dst[3]<<8);
// TODO: set PWM (which) to (duty)
EnablePWM2(65535, duty);
// PWM_1 is PIN_9
// PWM_2 is PIN_17
break;
case 'd':
wavetype = dst[1];
// wavetype = dst[1];
// TODO: set DDS to (wavetype) using SPI (set PIN_10 to 0, send SPI commands, set PIN_10 to 1)
break;
case 'D':
freq = dst[1] + (dst[2]<<8) + (dst[3]<<16) + (dst[4]<<24);
// freq = dst[1] + (dst[2]<<8) + (dst[3]<<16) + (dst[4]<<24);
// TODO: set DDS to (freq) Hz using SPI (set PIN_10 to 0, send SPI commands, set PIN_10 to 1)
break;
case 'm':
which = dst[1];
chan = dst[2];
gain = dst[3];
// which = dst[1];
// chan = dst[2];
// gain = dst[3];
// TODO: set opamp (which) on channel (chan) with gain (gain)
// for opamp1: set PIN_48 to 0, send SPI commands, set PIN_48 to 1
// for opamp2: set PIN_43 to 0, send SPI commands, set PIN_43 to 1
break;
case 's':
states = dst[1];
// states = dst[1];
// TODO: set switches to states
// switch1: PIN_12
// switch2: PIN_24
@ -59,15 +59,15 @@ void SetOutReport (uint8_t dst[], uint32_t length)
// switch6: PIN_37
break;
case 'P':
states = dst[1];
// states = dst[1];
// TODO: set pins to states (1 is INPUT, 0 is OUTPUT)
// pin1 is PIN_1
// pin2 is PIN_2
// pin3 is PIN_11
break;
case 'o':
which = dst[1] >> 1;
state = dst[1] & 0x01;
// which = dst[1] >> 1;
// state = dst[1] & 0x01;
// TODO: set output pins (which) to state (state)
// pin1 is PIN_1
// pin2 is PIN_2
@ -76,6 +76,13 @@ void SetOutReport (uint8_t dst[], uint32_t length)
}
}
void TIMER16_1_IRQHandler(void) {
LPC_TMR16B1->IR = 0xff;
LPC_GPIO1->DIR ^= 1<<6;
LPC_TMR16B1->MR0 -= 100;
}
//static uint8_t x = 0;
void TIMER32_0_IRQHandler(void) {
LPC_TMR32B0->IR = 0xff; // clear interrupt
@ -108,6 +115,36 @@ void TIMER32_0_IRQHandler(void) {
}
void EnablePWM1() {
// FAIL
}
void EnablePWM2(uint16_t period, uint16_t duty) {
if (!duty) {
LPC_SYSCON->SYSAHBCLKCTRL &= ~(1<<8); // disable
return;
}
LPC_SYSCON->SYSAHBCLKCTRL |= 1<<8; // Enables clock for 16-bit counter/timer 1.
LPC_IOCON->PIO1_9 &= ~0x07;
LPC_IOCON->PIO1_9 |= 0x01; // Selects function CT16B1_MAT0
LPC_TMR16B1->MR3 = period;
LPC_TMR16B1->MR0 = duty;
LPC_TMR16B1->MCR = 1<<10; // Reset on MR3: the TC will be reset if MR3 matches it.
LPC_TMR16B1->EMR = 3<<4; // Toggle the corresponding External Match bit/output.
LPC_TMR16B1->PWMC = 1<<0 | 1<<3; // enable PWM
//LPC_TMR16B1->MCR |= 1<<9| 1<<0; NVIC_EnableIRQ(TIMER_16_1_IRQn);
LPC_TMR16B1->TCR = 1;
}
void PWMRun(void) {
LPC_SYSCON->SYSAHBCLKCTRL |= 1<<9; // Enables clock for 32-bit counter/timer 0.

1
firmware/src/edubrm.h
View file

@ -1,3 +1,4 @@
void GetInReport (uint8_t src[], uint32_t length);
void SetOutReport (uint8_t dst[], uint32_t length);
void PWMRun(void);
void EnablePWM2(uint16_t period, uint16_t duty);

2
firmware/src/usbhidrom_main.c
View file

@ -77,8 +77,6 @@ int main (void)
for (n = 0; n < 75; n++) {}
PWMRun();
while (1)
__WFI();
}