SPI troubles

lpcware — Wed, 15 Jun 2016 18:49:52 GMT

Content originally posted in LPCWare by Scribe on Tue Jun 18 05:27:29 MST 2013

Hi guys,

I've written some simple SPI code using Keil, however I'm unable to get the module to transmit and trigger the SPI tranfer complete interrupt flag. Am I missing anything from the following code?

<div>#define CMSIS_BITPOSITIONS 1</div>
<div>#include <LPC43xx.h></div>
<div>int main( void )</div>
<div>{</div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>// Update the System Core Clock</div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>SystemCoreClockUpdate();</div>
<div> </div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>// Configure pins for SPI</div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>LPC_SCU->SFSP3_6 = 1; // MISO</div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>LPC_SCU->SFSP3_7 = 1; // MOSI</div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>LPC_SCU->SFSP3_3 = 1; // SCK</div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>LPC_SCU->SFSP3_8 = 1; // SSEL</div>
<div> </div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>// Configure the SPI Master Clock (PCLK_SPI / SPCCR)</div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>LPC_SPI->CCR = 16;</div>
<div> </div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>// Configure the SPI Module for Master Mode and X</div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>LPC_SPI->CR |= SPI_CR_MSTR_Msk | SPI_CR_SPIE_Msk;</div>
<div> </div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>while( 1 )</div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>{</div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>LPC_SPI->DR = 0xA1;</div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>while( !(LPC_SPI->SR & SPI_SR_SPIF_Msk) );</div>
<div><span class="Apple-tab-span" style="white-space: pre;"> </span>}</div>
<div>}</div>
<div><span style="font-family: Verdana, Arial, Helvetica, sans-serif;">Many thanks</span></div>

Re: SPI troubles

lpcware — Wed, 15 Jun 2016 18:49:52 GMT

Content originally posted in LPCWare by wmues on Tue Jun 18 13:15:08 MST 2013

Setup Power Managment - SPI clock enabled?

topic Re: SPI troubles in LPC Microcontrollers

SPI troubles

Re: SPI troubles