From c2d6b131035d71e6e909689877f2ff8103ad2e1e Mon Sep 17 00:00:00 2001
From: Sam Perry <17242713+sdp8483@users.noreply.github.com>
Date: Sun, 20 Feb 2022 16:57:10 -0500
Subject: [PATCH] fix speed halved in ESP32-WROOM-32E

ESP32 ECO3 added a configurable bit that will cause CAN bus speeds to be halved in new V3 core 32E module.
This bit is in `TWAI_INT_ENA_REG`, bit4 which was previously reserved.
Change respects reserved bit and should not cause issues for previous versions since this bit should not have been written to.
---
 src/CAN.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/CAN.c b/src/CAN.c
index 826f9db..c6e1b7b 100644
--- a/src/CAN.c
+++ b/src/CAN.c
@@ -226,7 +226,7 @@ int CAN_init() {
 	MODULE_CAN->BTR1.B.SAM = 0x1;
 
 	// enable all interrupts
-	MODULE_CAN->IER.U = 0xff;
+	MODULE_CAN->IER.U = 0xef;
 
 	 // Set acceptance filter	
 	MODULE_CAN->MOD.B.AFM = __filter.FM;	
@@ -296,4 +296,4 @@ int CAN_config_filter(const CAN_filter_t* p_filter) {
     __filter.AMR3 = p_filter->AMR3;
 	
 	return 0;
-}
\ No newline at end of file
+}