Arduino SPI PIN number

RE: Arduino SPI PIN number

Jakub Rzeszutko — Fri, 02 Mar 2018 06:49:59 GMT

Hi,

Regarding second point file st7565LCD.c is using spi transaction manager so you will not find direct access to registers as it is too high abstraction layer for SPI. You can read a bit more about SPI transaction manager here.

Functions used for communication:

nrf_spi_mngr_schedule - you can schedule many transactions which will be processed via interrupts when the bus is free.

nrf_spi_mngr_perform - you can schedule one transaction and you will wait until it is finished.

RE: Arduino SPI PIN number

Ree Wang — Thu, 01 Mar 2018 23:11:54 GMT

Thanks!

In st7565LCD.c file,

1) Could you please tell me which functions are used to read and write data to SPI peripheral device?

2) Is it possible to read and write the registers such as SPDR, SPSR and how to access the bit such as SPIF?

Sorry about these specific questions. The Arudino shield I am using uses a 3rd party library and AVR library, in that library, it uses SPDR, SPSR register and set register's bit.

RE: Arduino SPI PIN number

Ree Wang — Thu, 01 Mar 2018 22:54:06 GMT

Thanks

RE: Arduino SPI PIN number

Jakub Rzeszutko — Wed, 28 Feb 2018 08:17:44 GMT

Hi,

Example SPI configuration for Arduino shield can be found in file st7565LCD.c (sdk\nrf5\examples\peripheral\spi_master_using_nrf_spi_mngr)

It has following configuration:

.sck_pin = ARDUINO_13_PIN,
.mosi_pin = ARDUINO_11_PIN,
.miso_pin = NRF_DRV_SPI_PIN_NOT_USED,
.ss_pin = ARDUINO_10_PIN,

RE: Arduino SPI PIN number

Liverpool007 — Wed, 28 Feb 2018 07:43:16 GMT

You can redefine the pin numbers as per your requirenment.