LicheeRV Nano Pinout Diagram/Schematic Mismatch
fzi-haxel opened this issue · 1 comments
fzi-haxel commented
The LicheeRV Nano 70405 Pin Definition (the pinout diagram of the board) specifies the following functions for pins A18 and A19
- A19: GPIOA_19 UART1_RX JTAG_TCK PWM_7
- A18: GPIOA_18 UART1_TX JTAG_TMS PWM_6
But the schematic shows the following pins
- GPIOA_19: CR_4WTMS/CAM_MCLK0/PWM[7]/XGPIOA[19]/UART1_RTS/AUX0/UART1_TX/VO_D[28]/JTAG_CPU_TMS
- GPIOA_18: CR_4WTCK/CAM_MCLK1/PWM[6]/XGPIOA[18]/UART1_CTS/AUX1/UART1_RX/VO_D[29]/JTAG_CPU_TCK
which has the UART and JTAG pins swapped.
From my limited testing, I think this should be the correct version:
- A19: GPIOA_19 UART1_TX JTAG_TMS PWM_7
- A18: GPIOA_18 UART1_RX JTAG_TCK PWM_6
Fishwaldo commented
JTAG is broken on the board due to the pull up resisters on 18/19/28/29 so probably best to just remove any reference to JTAG regardless. :(