Ultima versão da banca de ensaios BMS Fev2017
Dependencies: CANnucleo LTC68041 mbed
Fork of BMS_4 by
Diff: main.cpp
- Revision:
- 15:6449443e2207
- Parent:
- 14:e12ebd1260b1
- Child:
- 16:a86f339d1c25
--- a/main.cpp Wed Jul 27 10:25:42 2016 +0000 +++ b/main.cpp Fri Jul 29 10:24:45 2016 +0000 @@ -1,8 +1,7 @@ /* * An example of using CAN bus with NUCLEO boards: * - * Two affordable (less than $4 on ebay) STM32F103C8T6 boards (20kB SRAM, 64kB Flash), - * compatible with the NUCLEO-F103RB platform (20kB SRAM, 128kB Flash), + * Two affordable (less than $3 on ebay) STM32F103C8T6 boards compatible with the NUCLEO-F103RB platform * are connected to the same CAN bus via transceivers (MCP2551 or TJA1040, or etc.). * CAN transceivers are not part of NUCLEO boards, therefore must be added by you. * Remember also that CAN bus (even a short one) must be terminated with 120 Ohm resitors at both ends. @@ -19,6 +18,7 @@ * */ + #include "mbed.h" //#define TARGET_STM32F103C8T6 1 // comment out this line when using official NUCLEO boards! @@ -44,7 +44,7 @@ DigitalOut led(LED_PIN); Timer timer; -CAN can(PA_11, PA_12); // CAN Rx pin name, CAN Tx pin name +CAN can(PA_11, PA_12); // CAN RD pin name, CAN TD pin name CANMessage rxMsg; char counter = 0; @@ -56,20 +56,22 @@ led = OFF; // turn LED off #endif + can.frequency(1000000); // set bit rate to 1Mbps + while(1) { - if(timer.read_ms() >= 200) { // check for timeout + if(timer.read_ms() >= 1000) { // check for timeout timer.stop(); // stop timer timer.reset(); // reset timer counter++; // increment counter led = OFF; // turn LED off if(can.write(CANMessage(TX_ID, &counter, 1))) // transmit message - printf("CAN message sent\r\n"); + printf("CAN message sent\r\n\r\n"); else - printf("Transmission error\r\n"); + printf("Transmission error\r\n\r\n"); } - if(can.read(rxMsg)) { - printf("CAN message received:\r\n"); - printf(" ID = %#x\r\n", rxMsg.id); + if(can.read(rxMsg)) { // check for new message + printf("CAN message received:\r\n"); // print message details + printf(" ID = 0x%.3x\r\n", rxMsg.id); printf(" Type = %d\r\n", rxMsg.type); printf(" Format = %d\r\n", rxMsg.format); printf(" Length = %d\r\n", rxMsg.len); @@ -80,8 +82,8 @@ if(rxMsg.id == RX_ID) { counter = rxMsg.data[0]; // set counter - printf("counter = %d\r\n", counter); // print counter - led = ON; // set LED + printf("counter = %d\r\n\r\n", counter); // print counter + led = ON; // turn LED on timer.start(); // transmission lag } }