Activity for Pete W
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| Comment | Post #296550 |
I won't argue that. Not familiar with MISRA but I saw your post on it here a while ago and it sounds reasonable. I have found CERT useful as a catalog of arithmetic-error vulnerabilities, for lack of a better word (more) |
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A: How do I test firmware code for my embedded system that also controls hardware peripherals? If the main function is logic and activation of on/off signals, and the number of output combinations and their timing needs are not prohibitive, The minimal test with actual mcu hardware, actual relays, and indicator lights to make visible the relay output. You could also use an oscilloscope wit... (more) |
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| Edit | Post #296546 | Initial revision | — | about 1 month ago |
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A: Communication with microcontroller via usart - using strings a good idea? Regarding string-based common protocol vs binary, there are indisputable reasons why binary is simpler, faster (these days rarely limiting), and arguably less trouble prone up to the level of complexity implied by the OP's scenario. However a common scenario is that the data itself has string f... (more) |
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A: How to use USB-B to power 5 V microcontroller and peripherals The USB chip will obviously be fine, and so will that MCU at most speeds. In practice the USB VDD coming out of a computer will be pretty well regulated at low frequencies. One concern is when using a dedicated USB transceiver chip with a 5V MCU, is that the transeiver's Rx/Tx is compatible wi... (more) |
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A: LM5069 hot-swap circuit for 48 V Inrush, overcurrent, fuse, etc: That hot-swap IC has both current limit (ie for diode and fuse) and MOSFET-power limit, and the time to blow the fuse is longer than timescales of the semiconductors. Peak current while blowing higher than 3A also. The use of the fuse would be to protect battery fr... (more) |
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| Comment | Post #295028 |
re: switch on/off logic - that looks better. Not sure if you were intending 1mA for everything (when off). The LM5069 itself, R82, and R83 would each use around 0.5mA . C32 seems minimal. (more) |
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