SPI in nrf51 dk

RE: SPI in nrf51 dk

rushin — Thu, 21 Jul 2016 09:53:28 GMT

can you help me??

RE: SPI in nrf51 dk

rushin — Thu, 21 Jul 2016 09:45:08 GMT

hey in this api

uint32_t err_code = nrf_drv_spi_transfer(&m_spi_master, p_tx_data, len, p_rx_data, len);

my p_tx_data array is transmitted continuously. p_rx_data is received continuously. but i want to put some delay between this array elements

RE: SPI in nrf51 dk

bjorn-spockeli — Fri, 15 Jul 2016 14:21:55 GMT

Not for you specific case, but you can use the driver as a base, just remove the sections where the register addresses and read/write commands are put into the transmit buffers.

RE: SPI in nrf51 dk

rushin — Wed, 13 Jul 2016 12:58:26 GMT

do you have some sample code??

RE: SPI in nrf51 dk

bjorn-spockeli — Wed, 13 Jul 2016 12:54:16 GMT

You should use the SPI driver from the SDK(nrf_drv_spi.c) directly instead of using the ADXL375 driver which is on top of the SDK SPI driver.

Well, it send something, but the ADXL driver(which I made) is meant to be used to communicate with the ADXL375 where the byte sequence sent over SPI must follow a specific format, e.g. [Register address + R/W bit | DATA ...... ]. When youre communicating between two microcontrollers you do not need to specific any register addresses, the MCUs will just put the received data in a buffer and then its up to the user to interpret it.

RE: SPI in nrf51 dk

rushin — Wed, 13 Jul 2016 11:46:17 GMT

why it will not work lpc11u24??

RE: SPI in nrf51 dk

rushin — Wed, 13 Jul 2016 11:45:25 GMT

lpc11u24 which is slave device.

RE: SPI in nrf51 dk

bjorn-spockeli — Wed, 13 Jul 2016 11:32:44 GMT

Which NXP microcontroller are you communicating with? You're using a ADXL375 SPI driver, which I doubt will work with a NXP microcontroller.

RE: SPI in nrf51 dk

rushin — Wed, 13 Jul 2016 11:13:45 GMT

can you help me to communicate between two nrf51 using SPI?/

RE: SPI in nrf51 dk

rushin — Tue, 12 Jul 2016 09:41:17 GMT

i am communicating with nxp microcontroller which is spi slave. i have not logic analyzer

RE: SPI in nrf51 dk

bjorn-spockeli — Tue, 12 Jul 2016 09:24:08 GMT

Which SPI device are you communicating with? Can you provide a logic trace/capture of the SPI lines?