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I´m programming accelerometer data receiving via SPI.
The problem is, even though every other function of the library works fine for me, this two ('mraa_spi_write_word' and 'mraa_spi_write_buf_word'…
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Power up sequence must be:
- Raspberry pi boots
- Load SPI drivers (which turns on SPI pin drivers)
- Power on MAX7221
If not, then the Pi can't communicate with the MAX7221 - its in a funky (and unr…
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We hope that the MAX7221 will work reliably with an out-of-spec 3.3V SPI clock and data in. To verify this, we can use a level translator to adjust the voltage until we start to get bus errors (which…
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