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firmware of device controller for ISP1362 chip

Altera_Forum
Honored Contributor II
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hi, 

 

I'm modifying the coding from DE2 board CD -> DE2_demonstrations -> DE2_NIOS_DEVICE_LED. 

For the firmware of device controller for ISP1362 chip, there got six related coding: MAINLOOP.C, CHAP_9.C, D13BUS.C, HAL4SYS.C, HAL4D13.C AND ISR.C. 

 

Where HAL4SYS.C and HAL4D13.C is hardware abstraction layer; 

ISR.C is interrupt service routine; 

CHAP_9.C and D13BUS.C is protocol layer; 

MAINLOOP.C is mainloop. 

 

Does anyone knows which firmware coding need to be modify and which one remains if I want to change the USB data block transfer to 16 bytes data block? 

 

Thanks and regards, 

Summer
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