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Post by mjb on Jan 19, 2017 10:44:59 GMT
There are some additional GPIO pins present on the ShieldBuddy which are not widely known about. The unpopulated IC (U601) is the CIC61508 safety monitor. This has 8 pins that are routed to the TC275. These are P20.12, P20.14, P20.11, P20.13, P33.8, P14.10 ,P14.9 and P14.8. The first 4 are a SPI channel and the rest are general purpose IO. The CIC61508 is a challenge-and-response safety watchdog used in the automotive industry for ASIL-B and ASIL-C applications. If this is not fitted, you can solder wires onto the unused pads to get some more IO pins. For example, P14.8/9/10 are available on the pads marked SYSA, SYSB, SYSC respectively. The schematic related to the CIC61508 is attached!
The CIC61508 can be replaced by an Infineon XC866-4FR 8-bit microcontroller. If you want to, you can use this as a slave processor and communicate with it using SPI. Programs can be written for it using the free 2k limited Keil C51 compiler but you will need a miniWiggler USB to JTAG debugger to program it.
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indy
New Member
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Post by indy on Mar 28, 2017 19:42:04 GMT
is there chance to get full schematics?  |
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wiken
New Member
Posts: 45
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Post by wiken on Oct 4, 2017 8:02:18 GMT
There are some additional GPIO pins present on the ShieldBuddy which are not widely known about. The unpopulated IC (U601) is the CIC61508 safety monitor. This has 8 pins that are routed to the TC275. These are P20.12, P20.14, P20.11, P20.13, P33.8, P14.10 ,P14.9 and P14.8. The first 4 are a SPI channel and the rest are general purpose IO. The CIC61508 is a challenge-and-response safety watchdog used in the automotive industry for ASIL-B and ASIL-C applications. If this is not fitted, you can solder wires onto the unused pads to get some more IO pins. For example, P14.8/9/10 are available on the pads marked SYSA, SYSB, SYSC respectively. The schematic related to the CIC61508 is attached!
The CIC61508 can be replaced by an Infineon XC866-4FR 8-bit microcontroller. If you want to, you can use this as a slave processor and communicate with it using SPI. Programs can be written for it using the free 2k limited Keil C51 compiler but you will need a miniWiggler USB to JTAG debugger to program it.
Hi. The other unpopulated connector P603 to the right of SYSA and SYSB, is there more I/O theres as well.  I'm currently is doing a symbol for the TC275 in Eagle, and those pins would be interesting to add, if they are of any use. Thanks. \Wiken
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Post by Admin on Oct 4, 2017 8:15:47 GMT
Unfortunately P603 is the CIC61508 JTAG debug connector so there is no Aurix GPIO on there!
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