mrumel/TCAN4550-py
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This commit is contained in:
Merrick Rumel 2022-06-15 16:05:24 -04:00
parent 85e81073ec
commit 3579d57bcf
4 changed files with 128 additions and 114 deletions
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1
requirements.txt
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@ -1 +1,2 @@
spidev
-e .

2
setup.cfg
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@ -15,7 +15,7 @@ package_dir =
=src
include_package_data = True
install_requires =
spidev
[options.packages.find]
where=src

113
src/TCAN4550-py/__init__.py
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@ -1,113 +0,0 @@
import ctypes
uint8_t = ctypes.c_uint8
uint32_t = ctypes.c_uint32
class TCAN4550:
def __init__(self) -> None:
self.dev_ie = TCAN4550_device_interrupt_enable()
self.dev_ie = 0x0
# Begin by clearing any potential SPI errors
self.TCAN_clearSPIerr()
self.TCAN_configure_interrupt_enable(self.dev_ie)
def TCAN_clearSPIerr(self) -> None:
pass
def TCAN_configure_interrupt_enable(self, ie) -> bool:
return True
class TCAN4550_device_interrupt_enable_bits(ctypes.LittleEndianStructure):
_fields_ = [
# @brief DEV_IE[0:7] : RESERVED
("RESERVED1", uint8_t , 8),
# @brief DEV_IE[8] : CANDOM, Can bus stuck dominant
("CANDOMEN", uint8_t , 1),
# @brief DEV_IE[9] : RESERVED
("RESERVED2", uint8_t , 1),
# @brief DEV_IE[10] : CANTO, CAN Timeout
("CANTOEN", uint8_t , 1),
# @brief DEV_IE[11] : RESERVED
("RESERVED3", uint8_t , 1),
# @brief DEV_IE[12] : FRAME_OVF, Frame Error Overflow (If Selective Wake is equipped)
("FRAME_OVFEN", uint8_t , 1),
# @brief DEV_IE[13] : WKERR, Wake Error
("WKERREN", uint8_t , 1),
# @brief DEV_IE[14] : LWU, Local Wake Up
("LWUEN", uint8_t , 1),
# @brief DEV_IE[15] : CANINT, CAN Bus Wake Up Interrupt
("CANINTEN", uint8_t , 1),
# @brief DEV_IE[16] : ECCERR, MRAM ECC Error
("ECCERREN", uint8_t , 1),
# @brief DEV_IE[17] : Reserved
("RESERVED4", uint8_t , 1),
# @brief DEV_IE[18] : WDTO, Watchdog Time Out
("WDTOEN", uint8_t , 1),
# @brief DEV_IE[19] : TSD, Thermal Shut Down
("TSDEN", uint8_t , 1),
# @brief DEV_IE[20] : PWRON, Power On Interrupt
("PWRONEN", uint8_t , 1),
# @brief DEV_IE[21] : UVIO, Undervoltage on UVIO
("UVIOEN", uint8_t , 1),
# @brief DEV_IE[22] : UVSUP, Undervoltage on VSUP and VCCOUT
("UVSUPEN", uint8_t , 1),
# @brief DEV_IE[23] : SMS, Sleep Mode Status Flag. Set when sleep mode is entered due to WKERR, UVIO, or TSD faults
("SMSEN", uint8_t , 1),
# @brief DEV_IE[24] : CANBUSBAT, CAN Shorted to VBAT
("CANBUSBATEN", uint8_t , 1),
# @brief DEV_IE[25] : CANBUSGND, CAN Shorted to GND
("CANBUSGNDEN", uint8_t , 1),
# @brief DEV_IE[26] : CANBUSOPEN, CAN Open fault
("CANBUSOPENEN", uint8_t , 1),
# @brief DEV_IE[27] : CANLGND, CANL GND
("CANLGNDEN", uint8_t , 1),
# @brief DEV_IE[28] : CANHBAT, CANH to VBAT
("CANHBATEN", uint8_t , 1),
# @brief DEV_IE[29] : CANHCANL, CANH and CANL shorted
("CANHCANLEN", uint8_t , 1),
# @brief DEV_IE[30] : CANBUSTERMOPEN, CAN Bus has termination point open
("CANBUSTERMOPENEN", uint8_t , 1),
# @brief DEV_IE[31] : CANBUSNOM, CAN Bus is normal flag
("CANBUSNORMEN", uint8_t , 1)
]
class TCAN4550_device_interrupt_enable(ctypes.Union):
_fields_ = [("b", TCAN4550_device_interrupt_enable_bits),
("word", uint32_t)]

126
src/TCAN4550-py/tcan4550.py Normal file
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@ -0,0 +1,126 @@
import ctypes
uint8_t = ctypes.c_uint8
uint32_t = ctypes.c_uint32
class TCAN4550:
def __init__(self) -> None:
self.dev_ie = TCAN4550_device_interrupt_enable()
self.dev_ie = 0x0
# Begin by clearing any potential SPI errors
self.TCAN_clearSPIerr()
self.TCAN_configure_interrupt_enable(self.dev_ie)
def TCAN_clearSPIerr(self) -> None:
pass
def TCAN_configure_interrupt_enable(self, ie) -> bool:
return True
def TCAN_write_32(self, address, data) -> None:
pass
def TCAN_write_word(self, data, address, no_words) -> None:
pass
def TCAN_read_32(self, address, data) -> uint32_t:
return 0
def TCAN_read(self,address, data, no_words) -> uint32_t:
return 0
class TCAN4550_device_interrupt_enable_bits(ctypes.LittleEndianStructure):
_fields_ = [
# @brief DEV_IE[0:7] : RESERVED
("RESERVED1", uint8_t , 8),
# @brief DEV_IE[8] : CANDOM, Can bus stuck dominant
("CANDOMEN", uint8_t , 1),
# @brief DEV_IE[9] : RESERVED
("RESERVED2", uint8_t , 1),
# @brief DEV_IE[10] : CANTO, CAN Timeout
("CANTOEN", uint8_t , 1),
# @brief DEV_IE[11] : RESERVED
("RESERVED3", uint8_t , 1),
# @brief DEV_IE[12] : FRAME_OVF, Frame Error Overflow (If Selective Wake is equipped)
("FRAME_OVFEN", uint8_t , 1),
# @brief DEV_IE[13] : WKERR, Wake Error
("WKERREN", uint8_t , 1),
# @brief DEV_IE[14] : LWU, Local Wake Up
("LWUEN", uint8_t , 1),
# @brief DEV_IE[15] : CANINT, CAN Bus Wake Up Interrupt
("CANINTEN", uint8_t , 1),
# @brief DEV_IE[16] : ECCERR, MRAM ECC Error
("ECCERREN", uint8_t , 1),
# @brief DEV_IE[17] : Reserved
("RESERVED4", uint8_t , 1),
# @brief DEV_IE[18] : WDTO, Watchdog Time Out
("WDTOEN", uint8_t , 1),
# @brief DEV_IE[19] : TSD, Thermal Shut Down
("TSDEN", uint8_t , 1),
# @brief DEV_IE[20] : PWRON, Power On Interrupt
("PWRONEN", uint8_t , 1),
# @brief DEV_IE[21] : UVIO, Undervoltage on UVIO
("UVIOEN", uint8_t , 1),
# @brief DEV_IE[22] : UVSUP, Undervoltage on VSUP and VCCOUT
("UVSUPEN", uint8_t , 1),
# @brief DEV_IE[23] : SMS, Sleep Mode Status Flag. Set when sleep mode is entered due to WKERR, UVIO, or TSD faults
("SMSEN", uint8_t , 1),
# @brief DEV_IE[24] : CANBUSBAT, CAN Shorted to VBAT
("CANBUSBATEN", uint8_t , 1),
# @brief DEV_IE[25] : CANBUSGND, CAN Shorted to GND
("CANBUSGNDEN", uint8_t , 1),
# @brief DEV_IE[26] : CANBUSOPEN, CAN Open fault
("CANBUSOPENEN", uint8_t , 1),
# @brief DEV_IE[27] : CANLGND, CANL GND
("CANLGNDEN", uint8_t , 1),
# @brief DEV_IE[28] : CANHBAT, CANH to VBAT
("CANHBATEN", uint8_t , 1),
# @brief DEV_IE[29] : CANHCANL, CANH and CANL shorted
("CANHCANLEN", uint8_t , 1),
# @brief DEV_IE[30] : CANBUSTERMOPEN, CAN Bus has termination point open
("CANBUSTERMOPENEN", uint8_t , 1),
# @brief DEV_IE[31] : CANBUSNOM, CAN Bus is normal flag
("CANBUSNORMEN", uint8_t , 1)
]
class TCAN4550_device_interrupt_enable(ctypes.Union):
_fields_ = [("b", TCAN4550_device_interrupt_enable_bits),
("word", uint32_t)]