From 07f08c426308d10a0c74ddf4a8f7d8443e0a499d Mon Sep 17 00:00:00 2001 From: Emard Date: Fri, 22 Feb 2019 00:49:32 +0100 Subject: [PATCH] manual update --- doc/MANUAL.md | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/doc/MANUAL.md b/doc/MANUAL.md index a7ae78b..e0991f5 100644 --- a/doc/MANUAL.md +++ b/doc/MANUAL.md @@ -428,11 +428,17 @@ To detach port B automatically: sudo sh -c "echo $unbind_tty > /sys/bus/usb/drivers/ftdi_sio/unbind" When USB-serial driver is detached from port A or B, Lattice Diamond programmer -can use this port as native JTAG programmer. +can use this port as native JTAG programmer. See also +[Versa under Linux](https://section5.ch/index.php/2017/01/26/ecp5g-versa-board-under-linux/). For JTAG sharing with ESP32 port B should be set to high impedance and the experimentally found solution is to set this port to FIFO or OPTO using "ftdi_eeprom" tool +source is here +[ftdi_eeprom source](https://www.intra2net.com/en/developer/libftdi/index.php) +there's also +[ftdi_eeprom readme](http://developer.intra2net.com/git/?p=libftdi;a=blob;f=README.build) +and the binary is already in linux distro: apt-get install ftdi_eeprom