Hello, i want to use arduino to controll stepper motors by AMIS 30621. As LIN driver i using TJA1028t. Arduino Mega 2560 - uart 1.
With inicialization or send request i have no problem but when i want obtain actual motor position i cant read first byte from driver.
I using command GetActual Position what need to sesnd synchronization and ID from arduino and then immediately obtaining data from driver with checksum.
Data looks like this:
break sync , 0x55 , ID , 0x8C,0x00,0x00,0x00,0x00,checksum
break sync , 0x55 , ID - is from arduino
0x8C,0x00,0x00,0x00,0x00,checksum - response from driver
but i cant read first byte 0x8C and without it i cant do anything.
i trying to read faster but everytime i cant read it.
checksum without first bit is correct with error.
Hello, i want to use arduino to controll stepper motors by AMIS 30621. As LIN driver i using TJA1028t. Arduino Mega 2560 - uart 1. With inicialization or send request i have no problem but when i want obtain actual motor position i cant read first byte from driver.
I using command GetActual Position what need to sesnd synchronization and ID from arduino and then immediately obtaining data from driver with checksum.
Data looks like this: break sync , 0x55 , ID , 0x8C,0x00,0x00,0x00,0x00,checksum break sync , 0x55 , ID - is from arduino 0x8C,0x00,0x00,0x00,0x00,checksum - response from driver
but i cant read first byte 0x8C and without it i cant do anything. i trying to read faster but everytime i cant read it. checksum without first bit is correct with error.
Thank you for response. Radek