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Diffstat (limited to 'docs/stm32f0_CAN.md')
| -rw-r--r-- | docs/stm32f0_CAN.md | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/docs/stm32f0_CAN.md b/docs/stm32f0_CAN.md index b0e4d96e..8ee9838c 100644 --- a/docs/stm32f0_CAN.md +++ b/docs/stm32f0_CAN.md @@ -7,6 +7,8 @@ Required components #### MCP2515 module  +or this + #### St-link dongle @@ -17,7 +19,7 @@ Adding CAN bus to Raspberry Pi ============================== (Based on Quick Guide https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=141052) -First of all, it’s necessary to modify the CAN-module from ebay, because it has +First of all, (only if you have small CAN module) it’s necessary to modify the CAN-module from ebay, because it has only one VCC pin, but the MCP2515 needs to be powered from 3V3 and the TJA1050 CAN-transceiver needs to be powered from 5V. Powering both chips from 5V would work, but then a level-shifter for the SPI would be needed. The Pi's GPIO pins @@ -135,5 +137,6 @@ Now "make flash" command can upload HEX into connected board Pins allocation =============== -Configurations with CAN and Serial port uses different pins, and firmware contains only -actual pins initialization. +Configurations with CAN and Serial port uses different pins, and during enumeration +process firmware reports all possible pin names. But actually you can use only +existing pins, not involved in communication. Wrong pins will generate shutdown. |