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app4
Dependencies: mbed-rtos mbed CRC16
Fork of S5info_APP2 by
main.cpp@8:5b87b1f9d91f, 2017-03-06 (annotated)
- Committer:
- ericbisson
- Date:
- Mon Mar 06 22:22:02 2017 +0000
- Revision:
- 8:5b87b1f9d91f
- Parent:
- 7:5501dbea5650
- Child:
- 10:8b066285c2e0
lis le message
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ericbisson | 7:5501dbea5650 | 1 | #include "mbed.h" |
ericbisson | 0:c637467eeb8f | 2 | #include "rtos.h" |
ericbisson | 7:5501dbea5650 | 3 | #include "bit.h" |
ericbisson | 8:5b87b1f9d91f | 4 | #include "uart.h" |
ericbisson | 1:b3ae0d9f02ad | 5 | |
ericbisson | 8:5b87b1f9d91f | 6 | const float HALF_PERIOD = 0.05; // secondes |
ericbisson | 2:c6465d4e82d2 | 7 | |
ericbisson | 7:5501dbea5650 | 8 | Serial pc(USBTX, USBRX, 9600); |
ericbisson | 7:5501dbea5650 | 9 | Serial uart(p13, p14, 9600); |
ericbisson | 7:5501dbea5650 | 10 | DigitalOut myled1(LED1); |
ericbisson | 8:5b87b1f9d91f | 11 | Thread ThreadLecture; |
ericbisson | 2:c6465d4e82d2 | 12 | |
ericbisson | 7:5501dbea5650 | 13 | bool bIsHalfPeriod = false; |
ericbisson | 7:5501dbea5650 | 14 | |
ericbisson | 7:5501dbea5650 | 15 | extern "C" void RIT_IRQHandler(void) { |
ericbisson | 7:5501dbea5650 | 16 | //clear flag |
ericbisson | 7:5501dbea5650 | 17 | LPC_RIT->RICTRL |= bit0; //write 1 to clear bit |
ericbisson | 5:e878d87782ce | 18 | |
ericbisson | 7:5501dbea5650 | 19 | myled1 = !myled1; |
ericbisson | 7:5501dbea5650 | 20 | bIsHalfPeriod = !bIsHalfPeriod; |
ericbisson | 1:b3ae0d9f02ad | 21 | } |
ericbisson | 1:b3ae0d9f02ad | 22 | |
ericbisson | 7:5501dbea5650 | 23 | void p14_interrupt() |
ericbisson | 7:5501dbea5650 | 24 | { |
ericbisson | 8:5b87b1f9d91f | 25 | // On turn off les interrupts de lecture une fois qu'on a détecter un message |
ericbisson | 8:5b87b1f9d91f | 26 | uart.attach(NULL, uart.RxIrq); |
ericbisson | 8:5b87b1f9d91f | 27 | |
ericbisson | 7:5501dbea5650 | 28 | // On envoie le signal au thread de lecture |
ericbisson | 8:5b87b1f9d91f | 29 | ThreadLecture.signal_set(1); |
ericbisson | 7:5501dbea5650 | 30 | }; |
ericbisson | 1:b3ae0d9f02ad | 31 | |
ericbisson | 7:5501dbea5650 | 32 | void read() |
ericbisson | 7:5501dbea5650 | 33 | { |
ericbisson | 7:5501dbea5650 | 34 | while(true) |
ericbisson | 7:5501dbea5650 | 35 | { |
ericbisson | 8:5b87b1f9d91f | 36 | // Attente passive d'un message entrant |
ericbisson | 8:5b87b1f9d91f | 37 | uart.attach(&p14_interrupt, uart.RxIrq); |
ericbisson | 8:5b87b1f9d91f | 38 | ThreadLecture.signal_wait(1); |
ericbisson | 2:c6465d4e82d2 | 39 | |
ericbisson | 8:5b87b1f9d91f | 40 | // Lis le message. Retourne une exception si il y a une erreur |
ericbisson | 8:5b87b1f9d91f | 41 | vector<char> message = uart_read(uart, pc); |
ericbisson | 2:c6465d4e82d2 | 42 | |
ericbisson | 8:5b87b1f9d91f | 43 | if (!message.empty()) |
ericbisson | 8:5b87b1f9d91f | 44 | { |
ericbisson | 8:5b87b1f9d91f | 45 | // Affiche le message à l'écran |
ericbisson | 8:5b87b1f9d91f | 46 | pc.printf(&message[0], message.size()); |
ericbisson | 8:5b87b1f9d91f | 47 | } |
ericbisson | 1:b3ae0d9f02ad | 48 | } |
ericbisson | 7:5501dbea5650 | 49 | }; |
ericbisson | 3:3ecbcc05bc85 | 50 | |
ericbisson | 7:5501dbea5650 | 51 | void rit_init() |
ericbisson | 4:87e9b434bb4d | 52 | { |
ericbisson | 7:5501dbea5650 | 53 | LPC_SC->PCONP |= bit16; //Power Control for Peripherals register: power up RIT clock |
ericbisson | 7:5501dbea5650 | 54 | LPC_SC->PCLKSEL1 |= (bit26 && bit27); //Peripheral clock selection: divide clock by 8 (run RIT clock by 12.5MHz) |
ericbisson | 7:5501dbea5650 | 55 | LPC_RIT->RICOUNTER = 0; //set counter to zero |
ericbisson | 8:5b87b1f9d91f | 56 | LPC_RIT->RICOMPVAL = 250000000 * HALF_PERIOD; //interrupt tick every HALF_PERIOD |
ericbisson | 7:5501dbea5650 | 57 | LPC_RIT->RICTRL |= bit1; // clear timer when counter reaches value |
ericbisson | 7:5501dbea5650 | 58 | LPC_RIT->RICTRL |= bit3; // enable timer |
ericbisson | 7:5501dbea5650 | 59 | |
ericbisson | 7:5501dbea5650 | 60 | //enable interrupt |
ericbisson | 7:5501dbea5650 | 61 | NVIC_SetPriority(RIT_IRQn, 31); |
ericbisson | 7:5501dbea5650 | 62 | NVIC_EnableIRQ(RIT_IRQn); |
ericbisson | 7:5501dbea5650 | 63 | }; |
ericbisson | 4:87e9b434bb4d | 64 | |
ericbisson | 2:c6465d4e82d2 | 65 | int main() { |
ericbisson | 7:5501dbea5650 | 66 | rit_init(); |
ericbisson | 0:c637467eeb8f | 67 | |
ericbisson | 8:5b87b1f9d91f | 68 | ThreadLecture.start(read); |
ericbisson | 0:c637467eeb8f | 69 | |
ericbisson | 3:3ecbcc05bc85 | 70 | while(true) { |
ericbisson | 7:5501dbea5650 | 71 | // TODO: Mettre ici le code pour l'input et l'envoie de message |
ericbisson | 8:5b87b1f9d91f | 72 | uart.printf("12345"); |
ericbisson | 7:5501dbea5650 | 73 | wait_ms(100); |
ericbisson | 0:c637467eeb8f | 74 | } |
ericbisson | 7:5501dbea5650 | 75 | }; |