Hi
I have an ATMega2560 16U-IH chip connected to an FT232RL FTDI chip which is then connected to my PC. From the PC, I am able to see the FTDI chip but unable to communicate with the ATMega2560 chip.
The wiring:
PC (USB) -> FTDI chip: - see attached image
+5v (red USB wire) to Pin 20 (VCC). Also a 0.1uf non-polarised capacitor to GND and 10uf polarised capacitor to GND
GND (black USB wire) to Pin 7, 18, 21, 25 & 26 (GND)
D+ (green USB wire) to Pin 15 (USBDP)
D- (white usb wire) to Pin 16 (USBDM)
FTDI chip to ATMega2560 chip - see attached image
Pin 1 (TXO) to Pin 2 (PE0)
Pin 5 (RXD) to Pin 3 (PE1)
ftdi wiring999×410 57.7 KB
The ATMega2560 is also powered from the USB +5v and GND (power is getting to the ATMega2560 chip).
Is there anything I am missing here that would stop this from working?
I have an ATMega2560 16U-IH chip connected to an FT232RL FTDI chip which is then connected to my PC. From the PC, I am able to see the FTDI chip but unable to communicate with the ATMega2560 chip.
The wiring:
PC (USB) -> FTDI chip: - see attached image
+5v (red USB wire) to Pin 20 (VCC). Also a 0.1uf non-polarised capacitor to GND and 10uf polarised capacitor to GND
GND (black USB wire) to Pin 7, 18, 21, 25 & 26 (GND)
D+ (green USB wire) to Pin 15 (USBDP)
D- (white usb wire) to Pin 16 (USBDM)
FTDI chip to ATMega2560 chip - see attached image
Pin 1 (TXO) to Pin 2 (PE0)
Pin 5 (RXD) to Pin 3 (PE1)
ftdi wiring999×410 57.7 KB
The ATMega2560 is also powered from the USB +5v and GND (power is getting to the ATMega2560 chip).
Is there anything I am missing here that would stop this from working?
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