lpcware

SPI on LPC-Link 2 (OM13054) Header J3

Discussion created by lpcware Employee on Jun 15, 2016
Content originally posted in LPCWare by OllieK on Mon Jan 06 18:21:16 MST 2014
This LPC4370 based board has one Synchronous Serial Port (SSP1) connected to J3 together with UART2, I2C, GPI05_8, GPI03_5, GPIO05_9, and GPI03_7.  There is only one SSP_SEL signal (pin 6).  In my application, there are multiple SPI slaves.   The questions are:

1) Can I use the GPIO signals in this connector for slave selection
2) What is the difference between the SSP_SEL and the GPIO signals
3) What is (are) the SPI libraries to be used for multi-slave configuration
4) Is the mutli-slave configuration supported by FreeRtos
5) Is the multi-slave configuration supported by DMA

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