IMHO you could connect time-sensitive things (like HC-SR04) directly to GPIO-pins, all others things - to expander.jesus_malaga wrote:but I do not want to run out of GPIO pins. Apart of that, the system has some extra hardware
because MCP2515 will produce 5V on his output pins (including those that are connected to PRI)vsboost wrote:"so powering MCP2515 and TJA1050 from 5V will break Pi IOs" why is this so?
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auto can0 iface can0 can static bitrate 125000
do you use parasite power?jbeale wrote:I have a problem with 1-Wire temperature sensor.
Are you out of GPIO pins?skpang wrote:The only thing I'm not sure is the interrupt pin. Both devices is connected to GPIO25 as stated in the overlay. Maybe it need individual pin but it is hard coded at the moment.
why do you want to bypass OS?honda4life wrote:So I have to check the TX buffer is empty AND the last byte is completely sent.
It does indeed.Jakeyboy wrote:Based on the information I can find the UART in the RPI does not support 9-bits natively...
yes, current pi kernel doesn't support CMSPAR.Hecnel wrote:I do the same think you do and I have that nothing happens in output.