nRF51822 usb dongle as SPI slave and LPC1343 as SPI master

[nithin]

Hello,

I have a running system powered by ARM Cortex-M3 (LPC1343 MCU) and I want to add bluetooth through nRF51822 usb dongle.

I want to send some data from LPC1343 to nRF51822 Dongle through SPI, LPC1343 as the master and nRF51822 as the slave. How can I configure the SPI?

Thankyou

[Hung Bui]

Hi Nithin,

It's not very clear for me how you connect the nRF51822 dongle to the LPC1343. Do you plan to connect via USB port on the nRF51822 ? Note that that USB interface is for UART. If you want to connect to SPI, you can use any pin on the nRF51. It's flexible. Note that we also provide serialization library in the nRF5 SDK that you may want to have a look.

[nithin]

Hello Hung,

thank you for your reply. I want to connect the nRF51822 Dongle through SPI. I referred to the SPI_Slave example for nRF51822 and tried to implement it. nRF51822 is not getting the commands (SPIS_CMD_REG_WRITE). The SPI clock freq, endianness, polarity are all configured right.

[Hung Bui]

@nithin: Which pin did you use ? The pin may already be used for something else on the board. Have you tried to hook a logic analyzer on the pin ?

[nithin]

@Hung Bui: I am using P0.15, 16, 17, 18 for MOSI, MISO, SCLK and chip select. i figured out the problem. the problem was with the LPC1343 MCU SPI pins. thank you