Part Number: MCT8315A
Thanks for the answer
Tool/software:
Hello ,
I'm working on MCT8315A I need to program the EEPROM via I2C before putting it in a device , So i use a linux SBC to communicate with it.
But i have a issue that make impossible for me to put the parameters in the chip (Only using the evaluation board and connecting I2C to my custom board i can change values ).
Here the schematic to see if there is issue (Powered in 5V)
And my C code
int write_SHADOW_REGISTER_MCT8315A(int reg,int32_t data){
char buf[10];
buf[0]=0x10; //No CRC
buf[1]=0x00;
buf[2]=reg;
buf[3]=data;
buf[4]=data>>8;
buf[5]=data>>16;
buf[6]=data>>24;
//printf("REG 0x%02x DATA : 0x%07x \n",reg,data);
//printf(" val %ld %d \n",write(file, buf, 7),errno);
if (write(file, buf, 7) != 7) {
printf("error writing at reg 0x%02x \n",reg);
return -1;
}
return 0;
}
int write_SHADOW_TO_EEPROM_MCT8315A(){
char buf[10];
buf[0]=0x10; //No CRC
buf[1]=0x00;
buf[2]=0xE6; //SHADOW REGISTER
buf[3]=0x00; //COMMAND
buf[4]=0x00; //COMMAND
buf[5]=0x50; //COMMAND
buf[6]=0x8A; //COMMAND
if (write(file, buf, 7) != 7) {
printf("error sending I2C copy to EEPROM\n");
return -1;
}
delay(1000); //WAIT FOR EEPROM WRITING
return 0;
}
int copy_EEPROM_TO_SHADOW_REGISTER_MCT8315A(){
//COPING EEPROM TO SHADOW REGISTER
char buf[10];
buf[0]=0x10; //No CRC
buf[1]=0x00;
buf[2]=0xE6; //SHADOW REGISTER
buf[3]=0x00; //COMMAND
buf[4]=0x00; //COMMAND
buf[5]=0x00; //COMMAND
buf[6]=0x40; //COMMAND
if (write(file, buf, 7) != 7) {
printf("error sending command copy EEPROM to shadow register\n");
return -1;
}
delay(400);
return 0;
}
int read_REGISTER_MCT8315A(int reg, int32_t data) {
char buf[10];
// READ SHADOW REGISTER
buf[0] = 0x90;
buf[1] = 0x00;
buf[2] = reg;
if (write(file, buf, 3) != 3) {
printf("error writing command read shadow register\n");
return -1;
}
if (read(file, buf, 4) != 4) {
printf("error reading from register\n");
return -1;
} else {
int j = 24;
char var_cast = 0;
for (int i = 3; i >= 0; i--) {
var_cast = (data >> j) & 0xFF;
if (buf[i] != var_cast) {
// Affiche uniquement en cas d'erreur
printf("Error validating register 0x%02x:\n", reg);
printf("Expected: 0x%08x\n", data);
printf("Received: 0x%02x%02x%02x%02x\n", buf[3], buf[2], buf[1], buf[0]);
return -1;
}
j -= 8;
}
}
return 0;
} delay(1000);
// Stop motor
write_SHADOW_REGISTER_MCT8315A(0xE8 ,0x00008000);
delay(1000);
// Clear faults
write_SHADOW_REGISTER_MCT8315A(0xE6,0x30000000);
delay(100);
// Effectuer les écritures
int i = 0; // Indice pour parcourir le tableau des valeurs
for (int j = 0; j < num_registres; j++) {
if (!is_commente(registres[j])) { // Si ce n'est pas un registre commenté
printf("registre [0x%X] data : 0x%08x\n",registres[j], values[i]);
int fault = write_SHADOW_REGISTER_MCT8315A(registres[j], values[i++]);
if (fault != 0) {
printf("Erreur lors de l'écriture dans le registre 0x%X\n", registres[j]);
status_error();
pthread_create(&LED_Fade_thread_Handle, NULL, LED_Fade, NULL);
return;
}
} else {
//printf("Registre 0x%X ignoré (commenté).\n", registres[j]);
i++;
}
}
printf("Écriture des registres terminée.\n");
// EEPROM write command
write_SHADOW_TO_EEPROM_MCT8315A();
int retry = 10;
while (retry--) {
if (read_REGISTER_MCT8315A(0xE6, 0x00000000) == 0) {
break; // EEPROM write done
}
delay(100); // wait 100ms before retry
}
if (retry < 0) {
printf("Erreur : EEPROM write timeout\n");
// gérer erreur
}
digitalWrite(PIN_CMD_RELAY,RELAY_DRIVER_BOARD_OFF);
delay(2000);
digitalWrite(PIN_CMD_RELAY,RELAY_DRIVER_BOARD_ON);
delay(2000);
copy_EEPROM_TO_SHADOW_REGISTER_MCT8315A();
// Stop motor
write_SHADOW_REGISTER_MCT8315A(0xE8 ,0x00008000);
delay(1000);
// Clear faults
write_SHADOW_REGISTER_MCT8315A(0xE6,0x30000000);
delay(100);
i=0;
// Effectuer les lectures depuis les registres
for (int j = 0; j < num_registres; j++) {
if (!is_commente(registres[j])) {
int fault=read_REGISTER_MCT8315A(registres[j], values[i++]);
printf("%d \n",i);
if (fault != 0) {
status_error();
pthread_create(&LED_Fade_thread_Handle, NULL, LED_Fade, NULL);
return;
}
} else {
//printf("Registre 0x%X ignoré (commenté).\n", registres[j]);
i++;
}
}Here the result in my terminal
registre [0x80] data : 0x6f044300 registre [0x82] data : 0x0ea89187 registre [0x84] data : 0x1a250aa4 registre [0x86] data : 0x000a0200 registre [0x88] data : 0x01a624b0 registre [0x8A] data : 0x4cc40101 registre [0x8C] data : 0x000ce944 registre [0x8E] data : 0x00401405 registre [0x90] data : 0x06a44c80 registre [0x96] data : 0x36db6da6 registre [0x98] data : 0x36db6d80 registre [0x9A] data : 0x054ba106 registre [0x9C] data : 0x52880000 registre [0x92] data : 0x78fc5035 registre [0x94] data : 0x7447a009 registre [0xAC] data : 0x14440200 registre [0xAE] data : 0x14c00000 registre [0xA4] data : 0x2d720640 registre [0xA6] data : 0x080c0800 registre [0xA8] data : 0x7fff4000Écriture des registres terminée. Error validating register 0xe6: Expected: 0x00000000 Received: 0x8a500000
So basically I2C works in write and read (i can read shadow register and write to it ) but the callback of 0xE6 is never at 0 so the EEPROM is never written
Also i have a other issue with FG pin.
When the motor is locked or unplugged at the intervall of LCK_RETRY i can see a signal of FG pin (the chip try to restart the motor).
But in my device that use this chip (unpossible to modify firmare) it detects it as a working motor and leads to issue.
How can i fix it with the MCT8315A still be able to restart a motor if locked
Here my profile :
{"signature": "oneui-register-data","data": [
[
{"idx": 0,"id": "isd_config","value": "0x6F044300"
},
{"idx": 1,"id": "motor_startup1","value": "0x0EA89187"
},
{"idx": 2,"id": "motor_startup2","value": "0x1A250AA4"
},
{"idx": 3,"id": "closed_loop1","value": "0x000A0200"
},
{"idx": 4,"id": "closed_loop2","value": "0x01A624B0"
},
{"idx": 5,"id": "closed_loop3","value": "0x4CC40101"
},
{"idx": 6,"id": "closed_loop4","value": "0x000CE944"
},
{"idx": 7,"id": "const_speed","value": "0x00401405"
},
{"idx": 8,"id": "const_pwr","value": "0x06A44C80"
},
{"idx": 9,"id": "150_deg_two_ph_profile","value": "0x36DB6DA6"
},
{"idx": 10,"id": "150_deg_three_ph_profile","value": "0x36DB6D80"
},
{"idx": 11,"id": "trap_config1","value": "0x054BA106"
},
{"idx": 12,"id": "trap_config2","value": "0x52880000"
}
],
[
{"idx": 0,"id": "fault_config1","value": "0x78FC5035"
},
{"idx": 1,"id": "fault_config2","value": "0x7447A009"
}
],
[
{"idx": 0,"id": "gd_config1","value": "0x14440200"
},
{"idx": 1,"id": "gd_config2","value": "0x14C00000"
}
],
[
{"idx": 0,"id": "pin_config1","value": "0x2D720640"
},
{"idx": 1,"id": "pin_config2","value": "0x080C0800"
},
{"idx": 2,"id": "device_config","value": "0x7FFF4000"
},
{"idx": 3,"id": "peri_config","value": "0x00000000"
}
],
[
{"idx": 0,"id": "ana_trim3","value": "0x4A004800"
},
{"idx": 1,"id": "ana_trim4","value": "0x00000000"
},
{"idx": 2,"id": "ana_trim5","value": "0x00000016"
},
{"idx": 3,"id": "ana_trim6","value": "0x00000000"
},
{"idx": 4,"id": "ana_trim7","value": "0x00000000"
},
{"idx": 5,"id": "ana_trim8","value": "0x00005085"
},
{"idx": 6,"id": "ana_trim9","value": "0x0091F81F"
},
{"idx": 7,"id": "ana_trim10","value": "0x536AF038"
}
],
[
{"idx": 0,"id": "algo_reserved1","value": "0x00000000"
},
{"idx": 1,"id": "algo_reserved2","value": "0x00000000"
},
{"idx": 2,"id": "algo_reserved3","value": "0x00000000"
}
],
[
{"idx": 0,"id": "gate_driver_fault_status","value": "0x00000000"
},
{"idx": 1,"id": "controller_fault_status","value": "0x00000000"
}
],
[
{"idx": 0,"id": "sys_status1","value": "0x0031EC90"
},
{"idx": 1,"id": "sys_status2","value": "0x20010674"
},
{"idx": 2,"id": "sys_status3","value": "0x003B004A"
}
],
[
{"idx": 0,"id": "device_ctrl","value": "0x00000000"
}
],
[
{"idx": 0,"id": "algo_ctrl1","value": "0x8A500000"
}
]
]
}Thanks for the answer
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