https://forge.codesys.com/forge/talk/Engineering/thread/39dd2e9fcc/2023-02-17T15:04:16.328000ZRecent posts to SPI communication in Raspberry Pi using CoDeSys2023-02-17T15:04:16.328000Z2023-02-17T15:04:16.328000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.com8f1cab234c51d6d40caad476823f56cd95eee095

<div class="markdown_content"><p>reduce SPI Maxspeed in the CODESYS config.</p></div>

2023-02-17T12:46:51.676000Z2023-02-17T12:46:51.676000Zdeekshahttps://forge.codesys.com/u/deeksha/https://forge.codesys.com751230593a8218fd9f28f2e99e6c6d56fa6c0c12

<div class="markdown_content"><p>Yes</p></div>

2023-02-17T12:46:48.725000Z2023-02-17T12:46:48.725000Zdeekshahttps://forge.codesys.com/u/deeksha/https://forge.codesys.com098e035e139c279c294b3d3b508a60e1d8412593

<div class="markdown_content"><p>Yes</p></div>

2023-02-17T12:46:44.923000Z2023-02-17T12:46:44.923000Zdeekshahttps://forge.codesys.com/u/deeksha/https://forge.codesys.com9e83b9ead537436d0dfcf63f05f429a07a39e5fa

<div class="markdown_content"><p>Yes</p></div>

2023-02-17T12:44:24.257000Z2023-02-17T12:44:24.257000ZDavidBohttps://forge.codesys.com/u/davidbo/https://forge.codesys.com83caa614e2ded08c971f7fab363d0d7a02249d82

<div class="markdown_content"><p>Have you enabled SPI in Pi using raspi-config</p></div>

2023-02-16T13:12:40.981000Z2023-02-16T13:12:40.981000Zdeekshahttps://forge.codesys.com/u/deeksha/https://forge.codesys.com240979e3c6c7a367b80ecc9023a1aca5cae11378

<div class="markdown_content"><p>Hi,</p> <p>I am using Raspberry pi in CoDeSys. I have connected Adruino to Raspberry pi through SPI pins where Adruino is sending data and Raspberry pi needs to receive that data which I am not able to get.<br/> Can someone please help me in understanding how to receive data over Raspberry pi in CoDeSys? <br/> I tried to use function:<br/> spiMaster.transfer(TXBUFF, RXBUFF, Len, Delay, Freq) but didn't work. I don't understand what the issue could be. <br/> I didn't find any description for the input arguments provided to above function. So, I declared these variables and used as input arguments. </p> <p>I am using Raspberry pi 4.<br/> I have used pins on Raspberry pi for SPI connections:<br/> MISO: GPIO 9<br/> MOSI: GPIO 10<br/> CLK: GPIO 11<br/> Chip enable CE1: GPIO 7<br/> Ground is common for both Raspberry pi and Adruino.</p> <p>I checked on Raspberry pi SPI pins too using oscilloscope, but it looks that Raspberry pi is not sending any data. <br/> So, I suspect that the function I am using is not correct. <br/> Anyone has any suggestion?</p></div>