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usb_canbus: Initial support for USB to CAN bridge mode

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Support a USB interface that shows up as a canbus adapter to linux.
Route both local and real canbus packets over that interface.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2022-06-08 21:03:11 -04:00
parent c8cc98ce5d
commit 790ff4d8d7
8 changed files with 782 additions and 15 deletions
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62
src/stm32/Kconfig
View File

@@ -108,6 +108,12 @@ config HAVE_STM32_CANBUS
config HAVE_STM32_FDCANBUS
bool
default y if MACH_STM32G0
config HAVE_STM32_USBCANBUS
bool
depends on HAVE_STM32_USBFS || HAVE_STM32_USBOTG
depends on HAVE_STM32_CANBUS || HAVE_STM32_FDCANBUS
depends on !MACH_STM32F103
default y
config MCU
string
@@ -327,30 +333,74 @@ choice
bool "CAN bus (on PA9/PA10)" if LOW_LEVEL_OPTIONS
depends on HAVE_STM32_CANBUS && MACH_STM32F042
select CANSERIAL
config STM32_CANBUS_PB8_PB9
config STM32_MMENU_CANBUS_PB8_PB9
bool "CAN bus (on PB8/PB9)" if LOW_LEVEL_OPTIONS
depends on HAVE_STM32_CANBUS || HAVE_STM32_FDCANBUS
select CANSERIAL
config STM32_CANBUS_PI9_PH13
config STM32_MMENU_CANBUS_PI9_PH13
bool "CAN bus (on PI9/PH13)" if LOW_LEVEL_OPTIONS
depends on HAVE_STM32_CANBUS && MACH_STM32F4
select CANSERIAL
config STM32_CANBUS_PB5_PB6
config STM32_MMENU_CANBUS_PB5_PB6
bool "CAN bus (on PB5/PB6)" if LOW_LEVEL_OPTIONS
depends on HAVE_STM32_CANBUS && MACH_STM32F4
select CANSERIAL
config STM32_CANBUS_PB12_PB13
config STM32_MMENU_CANBUS_PB12_PB13
bool "CAN bus (on PB12/PB13)" if LOW_LEVEL_OPTIONS
depends on HAVE_STM32_CANBUS && MACH_STM32F4
select CANSERIAL
config STM32_CANBUS_PD0_PD1
config STM32_MMENU_CANBUS_PD0_PD1
bool "CAN bus (on PD0/PD1)" if LOW_LEVEL_OPTIONS
depends on HAVE_STM32_CANBUS
select CANSERIAL
config STM32_CANBUS_PB0_PB1
config STM32_MMENU_CANBUS_PB0_PB1
bool "CAN bus (on PB0/PB1)"
depends on HAVE_STM32_FDCANBUS
select CANSERIAL
config STM32_USBCANBUS_PA11_PA12
bool "USB to CAN bus bridge (USB on PA11/PA12)"
depends on HAVE_STM32_USBCANBUS
select USBCANBUS
endchoice
choice
prompt "CAN bus interface" if USBCANBUS
config STM32_CMENU_CANBUS_PB8_PB9
bool "CAN bus (on PB8/PB9)"
config STM32_CMENU_CANBUS_PI9_PH13
bool "CAN bus (on PI9/PH13)"
depends on HAVE_STM32_CANBUS && MACH_STM32F4
config STM32_CMENU_CANBUS_PB5_PB6
bool "CAN bus (on PB5/PB6)"
depends on HAVE_STM32_CANBUS && MACH_STM32F4
config STM32_CMENU_CANBUS_PB12_PB13
bool "CAN bus (on PB12/PB13)"
depends on HAVE_STM32_CANBUS && MACH_STM32F4
config STM32_CMENU_CANBUS_PD0_PD1
bool "CAN bus (on PD0/PD1)"
depends on HAVE_STM32_CANBUS
config STM32_CMENU_CANBUS_PB0_PB1
bool "CAN bus (on PB0/PB1)"
depends on HAVE_STM32_FDCANBUS
endchoice
config STM32_CANBUS_PB8_PB9
bool
default y if STM32_MMENU_CANBUS_PB8_PB9 || STM32_CMENU_CANBUS_PB8_PB9
config STM32_CANBUS_PI9_PH13
bool
default y if STM32_MMENU_CANBUS_PI9_PH13 || STM32_CMENU_CANBUS_PI9_PH13
config STM32_CANBUS_PB5_PB6
bool
default y if STM32_MMENU_CANBUS_PB5_PB6 || STM32_CMENU_CANBUS_PB5_PB6
config STM32_CANBUS_PB12_PB13
bool
default y if STM32_MMENU_CANBUS_PB12_PB13 || STM32_CMENU_CANBUS_PB12_PB13
config STM32_CANBUS_PD0_PD1
bool
default y if STM32_MMENU_CANBUS_PD0_PD1 || STM32_CMENU_CANBUS_PD0_PD1
config STM32_CANBUS_PB0_PB1
bool
default y if STM32_MMENU_CANBUS_PB0_PB1 || STM32_CMENU_CANBUS_PB0_PB1
endif

2
src/stm32/Makefile
View File

@@ -63,6 +63,8 @@ canbus-src-y := generic/canserial.c ../lib/fast-hash/fasthash.c
canbus-src-$(CONFIG_HAVE_STM32_CANBUS) += stm32/can.c
canbus-src-$(CONFIG_HAVE_STM32_FDCANBUS) += stm32/fdcan.c
src-$(CONFIG_CANSERIAL) += $(canbus-src-y) generic/canbus.c stm32/chipid.c
src-$(CONFIG_USBCANBUS) += $(usb-src-y) $(canbus-src-y)
src-$(CONFIG_USBCANBUS) += stm32/chipid.c generic/usb_canbus.c
src-$(CONFIG_HAVE_GPIO_HARD_PWM) += stm32/hard_pwm.c
# Binary output file rules