Aditya Mehrotra
/
dyno_current_sense_f44
power board firmware for dyno
Revision 1:6b03278584b2, committed 2021-06-21
- Comitter:
- adimmit
- Date:
- Mon Jun 21 19:56:09 2021 +0000
- Parent:
- 0:f4f2a7b3364c
- Commit message:
- torque sense starting;
Changed in this revision
main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Mon Jun 21 19:50:05 2021 +0000 +++ b/main.cpp Mon Jun 21 19:56:09 2021 +0000 @@ -14,38 +14,30 @@ Serial pc(PA_2, PA_3); //setup scaling -float HV_CURRENT_SCALING = 0.0400; //V/A -float LV_CURRENT_SCALING = 0.0550; //V/A -float VOL_SENSE_SCALING = (1000000.0+30000.0)/30000.0; //V per Volt -float SYSTEM_VOLTAGE = 3.3; //volts -float VCC = 5.0; //volts -float EXT_CURRENT_SCALING = 0.008; //Sensitivity = 8mv/A external sensor +float TORQUE_SCALING = 0.0550; //V/A //setup analog inputs AnalogIn hv_current(PC_0); -AnalogIn lv_current(PC_1); -AnalogIn voltage_sense(PC_2); -AnalogIn ext_current_A(PC_3); //V_OUT (for now) -AnalogIn ext_current_B(PC_4); //V_REF (for now) + //setup CAN CAN can(PA_11, PA_12, 1000000); // CAN Rx pin name, CAN Tx pin name -CANMessage currMsg, statMsg; +CANMessage tauMsg; int ledState; Ticker sendCAN; int counter = 0; volatile bool msgAvailable = false; Ticker loop; -void pack_cmd(CANMessage * msg, float f1, float f2){ +void pack_cmd(CANMessage * msg, float f1){ /// convert floats to unsigned ints /// uint16_t f1_int = float_to_uint(f1, MIN, MAX, 16); - uint16_t f2_int = float_to_uint(f2, MIN, MAX, 16); + //uint16_t f2_int = float_to_uint(f2, MIN, MAX, 16); /// pack ints into the can buffer /// msg->data[0] = f1_int>>8; msg->data[1] = f1_int&0xFF; + /* msg->data[2] = f2_int>>8; msg->data[3] = f2_int&0xFF; - /* msg->data[4] = 0x00; msg->data[5] = 0x00; msg->data[6] = 0x00; @@ -58,14 +50,11 @@ wait(1); pc.baud(115200); wait(.01); - pc.printf("\n\r\n\r Biomimetics Power Board\n\r\n\r"); + pc.printf("\n\r\n\r Biomimetics Torque Sense Board\n\r\n\r"); wait(.01); - currMsg.len = 4; //transmit 4 bytes - statMsg.len = 4; //transmit 4 bytes - - currMsg.id = 0x1; //higher priority - statMsg.id = 0x2; //lower + tauMsg.len = 2; //transmit 4 bytes + tauMsg.id = 0x2; //higher priority while(1){ //wait(1); //GET RID OF THIS WAIT LATER @@ -79,10 +68,8 @@ float ext_cur = (V_OUT_EXT*SYSTEM_VOLTAGE-V_REF_EXT*SYSTEM_VOLTAGE) / EXT_CURRENT_SCALING; //PUBLISH //now we have to publish the four floats to the CAN BUS - pack_cmd(&currMsg, hv_cur, ext_cur); - pack_cmd(&statMsg, vol, lv_cur); - can.write(currMsg); + pack_cmd(&tauMsg, hv_cur); + can.write(tauMsg); wait(.00002); - can.write(statMsg); } }