From fc5dc374e6d55bfd9c5ec2ae6fafa6215836325b Mon Sep 17 00:00:00 2001 From: "Morgan 'ARR\\!' Allen" Date: Thu, 1 Sep 2022 17:42:13 -0700 Subject: [PATCH] USART/CAN notes --- README.md | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/README.md b/README.md index 9b08954..e8a00e2 100644 --- a/README.md +++ b/README.md @@ -18,6 +18,11 @@ https://github.com/mattthebaker/Smoothieware-CHMT In this approach the entire head unit will be bypassed. Ideally this could be accomplished by utilizing the existing IDC connector on the power/comm sub-board. +# 'CAN Bus' +Communication is done over the VP230 CAN Transceiver, though it doesn't look to be real CAN. +Instead the STM32 USART1 is connected so it's doing Syncronous UART over CAN. So it's really +just using the VP230 for differential signaling. + # Reading https://www.eevblog.com/forum/manufacture/neoden-tm245p-teardown-and-upgrade/