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all bms comunicating with nucleo board and balancing
Dependencies: CANnucleo LTC68041 mbed
Fork of BMS_2 by
main.cpp
- Committer:
- hudakz
- Date:
- 2015-12-05
- Revision:
- 6:7ff95ce72f6d
- Parent:
- 5:c6503b7ae971
- Child:
- 7:2dce8ed51091
File content as of revision 6:7ff95ce72f6d:
/* * An example showing how to use the CANnucleo library: * * Two affordable (less than $4 on ebay) STM32F103C8T6 boards (20kB SRAM, 64kB Flash), * compatible with the NUCLEO-F103RB platform (20kB SRAM, 128kB Flash), * 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. * * For more details see the wiki page <https://developer.mbed.org/users/hudakz/code/CAN_Nucleo_Hello/> * * NOTE: If you'd like to use the official NUCLEO-F103RB boards * comment out the line #define TARGET_STM32F103C8T6 1 * * The same code is used for both NUCLEO boards, but: * For board #1 compile the example without any change. * For board #2 comment out the line #define BOARD1 1 before compiling * * Once the binaries have been downloaded to the boards reset board #1. * */ #include "mbed.h" #include "CAN.h" #define BOARD1 1 // comment out this line when compiling for board #2 #if defined(BOARD1) #define RX_ID 0x100 #define TX_ID 0x101 #else #define RX_ID 0x101 #define TX_ID 0x100 #endif // See wiki page <https://developer.mbed.org/users/hudakz/code/CAN_Nucleo_Hello/> #define TARGET_STM32F103C8T6 1 // comment out this line if you'd like to use the official NUCLEO-F103RB boards #if defined(TARGET_STM32F103C8T6) DigitalOut led(PC_13); #else DigitalOut led(LED1); #endif int ledReceived; Timer timer; CAN can(PA_11, PA_12); // CAN Rx pin name, CAN Tx pin name, Automatic recovery from bus-off state enabled by default CANMessage rxMsg; CANMessage txMsg; int counter = 0; volatile bool msgAvailable = false; /** * @brief 'CAN receive-complete' interrup handler. * @note Called on arrival of new CAN message. * Keep it as short as possible. * @param * @retval */ void onMsgReceived() { msgAvailable = true; } /** * @brief Main * @note * @param * @retval */ int main() { can.frequency(1000000); // set bit rate to 1Mbps can.attach(&onMsgReceived, CAN::RxIrq); // attach 'CAN receive-complete' interrupt handler #if defined(BOARD1) #if defined(TARGET_STM32F103C8T6) led = 0; // turn LED on #else led = 1; // turn LED on #endif timer.start(); #else #if defined(TARGET_STM32F103C8T6) led = 1; // turn LED off #else led = 0; // turn LED off #endif #endif while(1) { if(timer.read() >= 1.0) { // check for timeout timer.stop(); // stop timer timer.reset(); // reset timer (to avaoid repeated send) counter++; // increment counter txMsg.clear(); // clear Tx message storage txMsg.id = TX_ID; // set ID txMsg << counter; // append first data item (make sure that CAN message total data lenght <= 8 bytes!) txMsg << led.read(); // append second data item (make sure that CAN message total data lenght <= 8 bytes!) can.write(txMsg); // transmit message printf("CAN message sent\r\n"); #if defined(TARGET_STM32F103C8T6) led = 1; // turn LED off #else led = 0; // turn LED off #endif } if(msgAvailable) { msgAvailable = false; // reset flag for next use can.read(rxMsg); // read message into Rx message storage printf("CAN message received:\r\n"); printf(" ID = %#x\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); printf(" Data ="); for(int i = 0; i < rxMsg.len; i++) printf(" %x", rxMsg.data[i]); printf("\r\n"); if(rxMsg.id == RX_ID) { // if ID matches rxMsg >> counter; // extract first data item rxMsg >> ledReceived; // extract second data item led = ledReceived; // set LED printf("counter = %d\r\n", counter); timer.start(); } } } }