chen xin
1
Diff: main.cpp
- Revision:
- 1:79e0d4791936
- Parent:
- 0:d6186b8990c5
- Child:
- 2:25837cbaee98
--- a/main.cpp Fri May 26 19:47:57 2017 +0000
+++ b/main.cpp Sat Nov 18 19:42:18 2017 +0000
@@ -1,23 +1,30 @@
-#define CAN_ID 0x1
+#define CAN_ID 0x0
#include "mbed.h"
#include "math_ops.h"
Serial pc(PA_2, PA_3);
-CAN can(PB_8, PB_9); // CAN Rx pin name, CAN Tx pin name
-CANMessage rxMsg;
-CANMessage txMsg1;
-CANMessage txMsg2;
+CAN can1(PB_8, PB_9); // CAN Rx pin name, CAN Tx pin name
+CAN can2(PB_5, PB_13); // CAN Rx pin name, CAN Tx pin name
+CANMessage rxMsg1, rxMsg2;
+CANMessage abad1, abad2, hip1, hip2, knee1, knee2; //TX Messages
int ledState;
-Timer timer;
Ticker sendCAN;
int counter = 0;
volatile bool msgAvailable = false;
Ticker loop;
- float theta1, theta2, dtheta1, dtheta2;
+///[[abad1, abad2]
+///[hip1, hip2]
+///[knee1, knee2]]
+float q[3][2]; //Joint states for both legs
+float dq[3][2];
+float tau[3][3];
+float kp = 60;
+float kd = 0.8;
+int enabled = 0;
/// Value Limits ///
#define P_MIN -12.5f
@@ -85,7 +92,7 @@
/// 3: [velocity[3-0], current[11-8]]
/// 4: [current[7-0]]
-void unpack_reply(CANMessage msg){
+void unpack_reply(CANMessage msg, int leg_num){
/// unpack ints from can buffer ///
int id = msg.data[0];
int p_int = (msg.data[1]<<8)|msg.data[2];
@@ -94,8 +101,11 @@
/// convert ints to floats ///
float p = uint_to_float(p_int, P_MIN, P_MAX, 16);
float v = uint_to_float(v_int, V_MIN, V_MAX, 12);
- float i = uint_to_float(i_int, -I_MAX, I_MAX, 12);
+ float t = uint_to_float(i_int, -T_MAX, T_MAX, 12);
+ q[id-1][leg_num] = p;
+ dq[id-1][leg_num] = v;
+ /*
if(id == 2){
theta1 = p;
dtheta1 = v;
@@ -104,93 +114,160 @@
theta2 = p;
dtheta2 = v;
}
+ */
+ //printf("%d %.3f %.3f %.3f\n\r", id, p, v, i);
}
- void onMsgReceived() {
- can.read(rxMsg); // read message into Rx message storage
- unpack_reply(rxMsg);
+ void rxISR1() {
+ can1.read(rxMsg1); // read message into Rx message storage
+ unpack_reply(rxMsg1, 0);
}
+void rxISR2(){
+ can2.read(rxMsg2);
+ unpack_reply(rxMsg2, 1);
+ }
+void WriteAll(){
+ can1.write(abad1);
+ wait(.0001);
+ can2.write(abad2);
+ wait(.0001);
+ can1.write(hip1);
+ wait(.0001);
+ can2.write(hip2);
+ wait(.0001);
+ can1.write(knee1);
+ wait(.0001);
+ can2.write(knee2);
+ wait(.0001);
+ }
void sendCMD(){
/// bilateral teleoperation demo ///
- pack_cmd(&txMsg1, theta2, dtheta2, 10, .1, 0);
- pack_cmd(&txMsg2, theta1, dtheta1, 10, .1, 0);
- can.write(txMsg2);
- wait(.0003); // Give motor 1 time to respond.
- can.write(txMsg1);
+ counter ++;
+
+ if(enabled){
+ if(counter>100){
+ //tcmd = -1*tcmd;
+ //printf("%.4f %.4f %.4f %.4f %.4f %.4f\n\r", q[0][0], q[1][0], q[2][0], q[0][1], q[1][1], q[2][1]);
+ counter = 0 ;
+ }
+
+ tau[0][1] = kp*(q[0][0] - q[0][1]) + kd*(dq[0][0] - dq[0][1]);
+ tau[0][0] = kp*(q[0][1] - q[0][0]) + kd*(dq[0][1] - dq[0][0]);
+ tau[1][1] = kp*(q[1][0] - q[1][1]) + kd*(dq[1][0] - dq[1][1]);
+ tau[1][0] = kp*(q[1][1] - q[1][0]) + kd*(dq[1][1] - dq[1][0]);
+ tau[2][1] = (kp/1.5f)*(q[2][0] - q[2][1]) + (kd/2.25f)*(dq[2][0] - dq[2][1]);
+ tau[2][0] = (kp/1.5f)*(q[2][1] - q[2][0]) + (kd/2.25f)*(dq[2][1] - dq[2][0]);
+
+ pack_cmd(&abad1, 0, 0, 0, .01, tau[0][0]);
+ pack_cmd(&abad2, 0, 0, 0, .01, tau[0][1]);
+ pack_cmd(&hip1, 0, 0, 0, .01, tau[1][0]);
+ pack_cmd(&hip2, 0, 0, 0, .01, tau[1][1]);
+ pack_cmd(&knee1, 0, 0, 0, .006, tau[2][0]);
+ pack_cmd(&knee2, 0, 0, 0, .006, tau[2][1]);
+ /*
+ pack_cmd(&abad1, q[0][1], dq[0][1], kp, kd, 0);
+ pack_cmd(&abad2, q[0][0], dq[0][0], kp, kd, 0);
+ pack_cmd(&hip1, q[1][1], dq[1][1], kp, kd, 0);
+ pack_cmd(&hip2, q[1][0], dq[1][0], kp, kd, 0);
+ pack_cmd(&knee1, q[2][1], dq[2][1], kp/1.5f, kd/2.25f, 0);
+ pack_cmd(&knee2, q[2][0], dq[2][0], kp/1.5f, kd/2.25f, 0);
+ */
+ }
+/*
+ pack_cmd(&abad1, 0, 0, 10, .1, 0);
+ pack_cmd(&abad2, 0, 0, 10, .1, 0);
+ pack_cmd(&hip1, 0, 0, 10, .1, 0);
+ pack_cmd(&hip2, 0, 0, 10, .1, 0);
+ pack_cmd(&knee1, 0, 0, 6.6, .04, 0);
+ pack_cmd(&knee2, 0, 0, 6.6, .04, 0);
+*/
+ WriteAll();
}
+void Zero(CANMessage * msg){
+ msg->data[0] = 0xFF;
+ msg->data[1] = 0xFF;
+ msg->data[2] = 0xFF;
+ msg->data[3] = 0xFF;
+ msg->data[4] = 0xFF;
+ msg->data[5] = 0xFF;
+ msg->data[6] = 0xFF;
+ msg->data[7] = 0xFE;
+ WriteAll();
+ }
+
+void EnterMotorMode(CANMessage * msg){
+ msg->data[0] = 0xFF;
+ msg->data[1] = 0xFF;
+ msg->data[2] = 0xFF;
+ msg->data[3] = 0xFF;
+ msg->data[4] = 0xFF;
+ msg->data[5] = 0xFF;
+ msg->data[6] = 0xFF;
+ msg->data[7] = 0xFC;
+ WriteAll();
+ }
+
+void ExitMotorMode(CANMessage * msg){
+ msg->data[0] = 0xFF;
+ msg->data[1] = 0xFF;
+ msg->data[2] = 0xFF;
+ msg->data[3] = 0xFF;
+ msg->data[4] = 0xFF;
+ msg->data[5] = 0xFF;
+ msg->data[6] = 0xFF;
+ msg->data[7] = 0xFD;
+ WriteAll();
+ }
void serial_isr(){
- /// hangle keyboard commands from the serial terminal ///
+ /// handle keyboard commands from the serial terminal ///
while(pc.readable()){
char c = pc.getc();
switch(c){
case(27):
+ loop.detach();
printf("\n\r exiting motor mode \n\r");
- txMsg1.data[0] = 0xFF;
- txMsg1.data[1] = 0xFF;
- txMsg1.data[2] = 0xFF;
- txMsg1.data[3] = 0xFF;
- txMsg1.data[4] = 0xFF;
- txMsg1.data[5] = 0xFF;
- txMsg1.data[6] = 0xFF;
- txMsg1.data[7] = 0xFD;
-
- txMsg2.data[0] = 0xFF;
- txMsg2.data[1] = 0xFF;
- txMsg2.data[2] = 0xFF;
- txMsg2.data[3] = 0xFF;
- txMsg2.data[4] = 0xFF;
- txMsg2.data[5] = 0xFF;
- txMsg2.data[6] = 0xFF;
- txMsg2.data[7] = 0xFD;
+ ExitMotorMode(&abad1);
+ ExitMotorMode(&abad2);
+ ExitMotorMode(&hip1);
+ ExitMotorMode(&hip2);
+ ExitMotorMode(&knee1);
+ ExitMotorMode(&knee2);
+ enabled = 0;
break;
case('m'):
printf("\n\r entering motor mode \n\r");
- txMsg1.data[0] = 0xFF;
- txMsg1.data[1] = 0xFF;
- txMsg1.data[2] = 0xFF;
- txMsg1.data[3] = 0xFF;
- txMsg1.data[4] = 0xFF;
- txMsg1.data[5] = 0xFF;
- txMsg1.data[6] = 0xFF;
- txMsg1.data[7] = 0xFC;
-
- txMsg2.data[0] = 0xFF;
- txMsg2.data[1] = 0xFF;
- txMsg2.data[2] = 0xFF;
- txMsg2.data[3] = 0xFF;
- txMsg2.data[4] = 0xFF;
- txMsg2.data[5] = 0xFF;
- txMsg2.data[6] = 0xFF;
- txMsg2.data[7] = 0xFC;
+ EnterMotorMode(&abad1);
+ Zero(&abad1);
+ EnterMotorMode(&abad2);
+ Zero(&abad2);
+ EnterMotorMode(&hip1);
+ Zero(&hip1);
+ EnterMotorMode(&hip2);
+ Zero(&hip2);
+ EnterMotorMode(&knee1);
+ Zero(&knee1);
+ EnterMotorMode(&knee2);
+ Zero(&knee2);
+ wait(.5);
+ enabled = 1;
+ loop.attach(&sendCMD, .001);
break;
case('z'):
printf("\n\r zeroing \n\r");
- txMsg1.data[0] = 0xFF;
- txMsg1.data[1] = 0xFF;
- txMsg1.data[2] = 0xFF;
- txMsg1.data[3] = 0xFF;
- txMsg1.data[4] = 0xFF;
- txMsg1.data[5] = 0xFF;
- txMsg1.data[6] = 0xFF;
- txMsg1.data[7] = 0xFE;
-
- txMsg2.data[0] = 0xFF;
- txMsg2.data[1] = 0xFF;
- txMsg2.data[2] = 0xFF;
- txMsg2.data[3] = 0xFF;
- txMsg2.data[4] = 0xFF;
- txMsg2.data[5] = 0xFF;
- txMsg2.data[6] = 0xFF;
- txMsg2.data[7] = 0xFE;
+ Zero(&abad1);
+ Zero(&abad2);
+ Zero(&hip1);
+ Zero(&hip2);
+ Zero(&knee1);
+ Zero(&knee2);
break;
}
}
- can.write(txMsg1);
- can.write(txMsg2);
+ WriteAll();
}
@@ -198,21 +275,38 @@
int main() {
pc.baud(921600);
pc.attach(&serial_isr);
- can.frequency(1000000); // set bit rate to 1Mbps
- can.attach(&onMsgReceived); // attach 'CAN receive-complete' interrupt handler
- can.filter(CAN_ID<<21, 0xFFE00004, CANStandard, 0); //set up can filter
- printf("Master\n\r");
+ can1.frequency(1000000); // set bit rate to 1Mbps
+ can1.attach(&rxISR1); // attach 'CAN receive-complete' interrupt handler
+ can1.filter(CAN_ID<<21, 0xFFE00004, CANStandard, 0); //set up can filter
+ can2.frequency(1000000); // set bit rate to 1Mbps
+ can2.attach(&rxISR2); // attach 'CAN receive-complete' interrupt handler
+ can2.filter(CAN_ID<<21, 0xFFE00004, CANStandard, 0); //set up can filter
+
+ printf("\n\r Master\n\r");
//printf("%d\n\r", RX_ID << 18);
- int count = 0;
- txMsg1.len = 8; //transmit 8 bytes
- txMsg2.len = 8; //transmit 8 bytes
- rxMsg.len = 6; //receive 5 bytes
- loop.attach(&sendCMD, .001);
- txMsg1.id = 0x2; //1st motor ID
- txMsg2.id = 0x3; //2nd motor ID
- pack_cmd(&txMsg1, 0, 0, 0, 0, 0); //Start out by sending all 0's
- pack_cmd(&txMsg2, 0, 0, 0, 0, 0);
- timer.start();
+ abad1.len = 8; //transmit 8 bytes
+ abad2.len = 8; //transmit 8 bytes
+ hip1.len = 8;
+ hip2.len = 8;
+ knee1.len = 8;
+ knee2.len = 8;
+ rxMsg1.len = 6; //receive 5 bytes
+ rxMsg2.len = 6; //receive 5 bytes
+
+
+ abad1.id = 0x1;
+ abad2.id = 0x1;
+ hip1.id = 0x2;
+ hip2.id = 0x2;
+ knee1.id = 0x3;
+ knee2.id = 0x3;
+ pack_cmd(&abad1, 0, 0, 0, 0, 0); //Start out by sending all 0's
+ pack_cmd(&abad2, 0, 0, 0, 0, 0);
+ pack_cmd(&hip1, 0, 0, 0, 0, 0);
+ pack_cmd(&hip2, 0, 0, 0, 0, 0);
+ pack_cmd(&knee1, 0, 0, 0, 0, 0);
+ pack_cmd(&knee2, 0, 0, 0, 0, 0);
+
while(1) {