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teemuatlut / TMC2130Stepper

Arduino library for Trinamic TMC2130 Stepper driver
MIT License
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Possible pull request... Use MCP23017 to multiple SPI TMC2130 #96

Closed julioj4pa closed 4 years ago

julioj4pa commented 4 years ago

Hi nice to e-meet you. I'm newbie at github... By the way thank you for every developer of this library it helps me a lot. I'm working on project to against hunger. So I changed library to use MCP23017 IO expander to use less DIO when someone need to use multiple SPI TMC2130 with AccelStepper. If someone needs it. I can zip it and send with example...

TMC2130Stepper driver = TMC2130Stepper(EN_PIN, DIR_PIN, STEP_PIN, CS_PIN, 51, 50, 52); driver.addMcp(&mcp); driver.begin();

void (TMC2130Stepper or AccelStepper)::addMcp(MCP23017 *nMcp){ mcp=nMcp; useMcp=true; }

Inside Library function... Example if(useMcp){ mcp->digitalWrite(_pinCS, HIGH); } else{ digitalWrite(_pinCS, HIGH); }

teemuatlut commented 4 years ago

You can fork it and that way have it available for others. I won't be developing this library much further as it has been superseded by the TMCStepper lib.

julioj4pa commented 4 years ago

Ok. Thank you

Er9y714 commented 3 years ago

@julioj4pa can I get a copy of library please? I needed this long ago. Then I figured to connect 2 motors on the same ESP8266 by using SPI. Nevertheless, this library might be useful someday.

teemuatlut commented 3 years ago

With TMCStepper you can daisy-chain SPI based drivers and control 127 of them with just the four pins.

Er9y714 commented 3 years ago

@teemuatlut , but do not we need separate pins for each driver on the STEP and CS pins? Then for each driver, we are using up more pins.

teemuatlut commented 3 years ago

You share a single CS pin between all the drivers and shift data through the drivers to address one further down the chain. You'll need to use something like the 5130 or 5160 and their internal step generator if you want to remove the step pin.

Er9y714 commented 3 years ago

I am not familiar of these methods. I will need to do some research. Thanks for the tip!