APP 4
Dependencies: mbed CRC16 mbed-rtos
APP.cpp@3:3ffa14e75b8a, 2016-02-20 (annotated)
- Committer:
- vinbel93
- Date:
- Sat Feb 20 20:44:35 2016 +0000
- Revision:
- 3:3ffa14e75b8a
- Parent:
- 2:1250280a511b
- Child:
- 6:3181f546e812
- Child:
- 7:733d500dbe5c
manchester and swag
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
manl2003 | 2:1250280a511b | 1 | #include "APP.h" |
vinbel93 | 3:3ffa14e75b8a | 2 | #include "Manchester.h" |
vinbel93 | 0:ac5e42371639 | 3 | |
vinbel93 | 0:ac5e42371639 | 4 | Serial pc(USBTX, USBRX); |
vinbel93 | 0:ac5e42371639 | 5 | |
vinbel93 | 3:3ffa14e75b8a | 6 | bool messageReady = false; |
vinbel93 | 3:3ffa14e75b8a | 7 | bitset<2 * FRAMESIZE> message; |
vinbel93 | 3:3ffa14e75b8a | 8 | int counter = 0; |
vinbel93 | 0:ac5e42371639 | 9 | |
vinbel93 | 1:f212b6676849 | 10 | int benchmark(void (*function) (void)) |
vinbel93 | 0:ac5e42371639 | 11 | { |
vinbel93 | 3:3ffa14e75b8a | 12 | int count = LPC_TIM2->TC; |
vinbel93 | 0:ac5e42371639 | 13 | function(); |
vinbel93 | 3:3ffa14e75b8a | 14 | return LPC_TIM2->TC - count; |
vinbel93 | 0:ac5e42371639 | 15 | } |
vinbel93 | 0:ac5e42371639 | 16 | |
vinbel93 | 1:f212b6676849 | 17 | extern "C" void TIMER2_IRQHandler() |
vinbel93 | 0:ac5e42371639 | 18 | { |
vinbel93 | 0:ac5e42371639 | 19 | if ((LPC_TIM2->IR & 0x01) == 0x01) // if MR0 interrupt, proceed |
vinbel93 | 0:ac5e42371639 | 20 | { |
vinbel93 | 3:3ffa14e75b8a | 21 | LPC_TIM2->IR |= 1 << 0; // Clear MR0 interrupt flag |
vinbel93 | 3:3ffa14e75b8a | 22 | |
vinbel93 | 3:3ffa14e75b8a | 23 | if (messageReady) |
vinbel93 | 0:ac5e42371639 | 24 | { |
vinbel93 | 3:3ffa14e75b8a | 25 | LPC_TIM2->EMR = ((message[counter++] + 1) << 4); |
vinbel93 | 0:ac5e42371639 | 26 | } |
vinbel93 | 3:3ffa14e75b8a | 27 | else |
vinbel93 | 0:ac5e42371639 | 28 | { |
vinbel93 | 3:3ffa14e75b8a | 29 | LPC_TIM2->EMR = (1 << 4); // output 0 |
vinbel93 | 0:ac5e42371639 | 30 | } |
vinbel93 | 0:ac5e42371639 | 31 | } |
vinbel93 | 0:ac5e42371639 | 32 | } |
vinbel93 | 0:ac5e42371639 | 33 | |
vinbel93 | 1:f212b6676849 | 34 | void initTimer() |
vinbel93 | 0:ac5e42371639 | 35 | { |
vinbel93 | 0:ac5e42371639 | 36 | LPC_SC->PCLKSEL1 |= (1 << 12); // pclk = cclk timer2 |
vinbel93 | 0:ac5e42371639 | 37 | LPC_SC->PCONP |= (1 << 22); // timer2 power on |
vinbel93 | 3:3ffa14e75b8a | 38 | LPC_TIM2->MR0 = 9600000; // 100 ms |
vinbel93 | 3:3ffa14e75b8a | 39 | LPC_TIM2->MCR = 3; // interrupt and reset control |
vinbel93 | 3:3ffa14e75b8a | 40 | // Interrupt & reset timer2 on match |
vinbel93 | 0:ac5e42371639 | 41 | NVIC_EnableIRQ(TIMER2_IRQn); // enable timer2 interrupt |
vinbel93 | 0:ac5e42371639 | 42 | LPC_TIM2->TCR = 1; // enable Timer2 |
vinbel93 | 0:ac5e42371639 | 43 | } |
vinbel93 | 0:ac5e42371639 | 44 | |
vinbel93 | 1:f212b6676849 | 45 | int main() |
vinbel93 | 0:ac5e42371639 | 46 | { |
vinbel93 | 0:ac5e42371639 | 47 | LPC_PINCON->PINSEL0 |= (3 << 12); // P0.6 = MAT2.0 |
vinbel93 | 0:ac5e42371639 | 48 | |
vinbel93 | 1:f212b6676849 | 49 | initTimer(); |
vinbel93 | 3:3ffa14e75b8a | 50 | |
vinbel93 | 3:3ffa14e75b8a | 51 | while (true) |
vinbel93 | 0:ac5e42371639 | 52 | { |
vinbel93 | 0:ac5e42371639 | 53 | wait(1.0); |
vinbel93 | 0:ac5e42371639 | 54 | } |
vinbel93 | 0:ac5e42371639 | 55 | } |