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https://github.com/brmlab/edubrm.git
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131 lines
3 KiB
C
131 lines
3 KiB
C
#include "config.h"
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#include "LPC13xx.h"
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#include "ssp.h"
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#include "adc.h"
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void GetInReport (uint8_t src[], uint32_t length)
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{
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uint8_t i;
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uint32_t volatile reg = LPC_USB->CmdCode;
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if (reg & (5<<8)) return;
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for (i=0; i<6; ++i) {
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uint32_t v = ADCRead(i);
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src[i*2 ] = v & 0xff;
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src[i*2+1] = (v>>8) & 0xff;
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}
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// TODO: fix the following - replace IP[i] with real value of input pin (I)
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// src[12] = IP[0] + (IP[1]<<1) + (IP[2]<<2);
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}
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void SetOutReport (uint8_t dst[], uint32_t length)
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{
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uint8_t which, wavetype, chan, states;
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uint16_t duty, mult;
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uint32_t freq;
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switch (dst[0]) {
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case 'p':
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which = dst[1];
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duty = dst[2] + (dst[3]<<8);
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// TODO: set PWM (which) to (duty)
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// PWM_1 is PIN_9
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// PWM_2 is PIN_17
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break;
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case 'd':
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wavetype = dst[1];
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// TODO: set DDS to (wavetype) using SPI (set PIN_10 to 0, send SPI commands, set PIN_10 to 1)
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break;
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case 'D':
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freq = dst[1] + (dst[2]<<8) + (dst[3]<<16) + (dst[4]<<24);
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// TODO: set DDS to (freq) Hz using SPI (set PIN_10 to 0, send SPI commands, set PIN_10 to 1)
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break;
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case 'm':
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which = dst[1];
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chan = dst[2];
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gain = dst[3];
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// TODO: set opamp (which) on channel (chan) with gain (gain)
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// for opamp1: set PIN_48 to 0, send SPI commands, set PIN_48 to 1
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// for opamp2: set PIN_43 to 0, send SPI commands, set PIN_43 to 1
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break;
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case 's':
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states = dst[1];
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// TODO: set switches to states
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// switch1: PIN_12
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// switch2: PIN_24
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// switch3: PIN_25
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// switch4: PIN_31
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// switch5: PIN_36
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// switch6: PIN_37
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break;
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case 'P':
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states = dst[1];
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// TODO: set pins to states (1 is INPUT, 0 is OUTPUT)
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// pin1 is PIN_1
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// pin2 is PIN_2
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// pin3 is PIN_11
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break;
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case 'o':
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which = dst[1] >> 1;
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state = dst[1] & 0x01;
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// TODO: set output pins (which) to state (state)
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// pin1 is PIN_1
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// pin2 is PIN_2
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// pin3 is PIN_11
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break;
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}
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}
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//static uint8_t x = 0;
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void TIMER32_0_IRQHandler(void) {
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LPC_TMR32B0->IR = 0xff; // clear interrupt
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/*
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uint32_t x = LPC_TMR32B0->EMR & 1 ? 0xff : 0;
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SSPSend((uint8_t*)&x, 1);
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*/
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/*
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uint32_t x = ADCRead(0);
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uint8_t z = 0;
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if (x >= 0) z = 0x01;
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if (x >= 32) z = 0x02;
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if (x >= 64) z = 0x04;
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if (x >= 96) z = 0x08;
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if (x >= 128) z = 0x10;
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if (x >= 160) z = 0x20;
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if (x >= 192) z = 0x40;
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if (x >= 256) z = 0x80;
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z |= 0x80;
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SSPSend(&z, 1);
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*/
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// read PIO3_3
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uint8_t x = LPC_GPIO3->MASKED_ACCESS[1<<3];
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x = (x&(1<<3)) ? 0xff : 0;
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SSPSend(&x, 1);
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}
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void PWMRun(void) {
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LPC_SYSCON->SYSAHBCLKCTRL |= 1<<9; // Enables clock for 32-bit counter/timer 0.
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LPC_IOCON->PIO1_6 &= ~0x07;
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LPC_IOCON->PIO1_6 |= 0x02; // Selects function CT32B0_MAT0
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LPC_TMR32B0->MR3 = 4294967; // period
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LPC_TMR32B0->MR0 = 4294967/2; // duty
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LPC_TMR32B0->MCR = 1<<10; // Reset on MR3: the TC will be reset if MR3 matches it.
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LPC_TMR32B0->EMR = 3<<4; // Toggle the corresponding External Match bit/output.
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LPC_TMR32B0->PWMC = 1<<0 | 1<<3; // enable pwn
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// LPC_TMR32B0->MCR |= 1<<9| 1<<0; NVIC_EnableIRQ(TIMER_32_0_IRQn);
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LPC_TMR32B0->TCR = 1;
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}
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