Hi Tim, It is very straightforward, basically you will replace:
FAR struct i2c_master_s *i2c; i2c = stm32_i2cbus_initialize(AT24_I2C_BUS); mtd = at24c_initialize(i2c); WITH: FAR struct spi_dev_s *spi; spi = sam_spibus_initialize(AT25_SPI_PORTNO); mtd = at25_initialize(spi); But of course, if you don't know how to configure the SPI pins (including the GPIO pin CS), nothing will work. For Atmel/Microchip SAMxx family SPI, I think boards/arm/samv7/samv71-xult/src/sam_st7789.c could be a good reference. BR, Alan On 8/24/21, Tim Hardisty <t...@jti.uk.com.invalid> wrote: > AT24 is I2C and this is well supported in NuttX. AT25 is SPI and is what I > have (AT25128) and it is not well supported, with no example code or boards > that support it (that I can find) > > > > > > > > > > From: Gregory Nutt <spudan...@gmail.com> > Reply to: <dev@nuttx.apache.org> > Date: Tuesday, 24 August 2021 at 20:11 > To: <dev@nuttx.apache.org> > Subject: Re: SPI EEPROM > > > > > > That’s AT24 I2C not AT25 SPI EEPROM unfortunatel, and from a quick look it > “just worked” ☹ > > > > There is support for the AT24 in other SAM boards. Search for AT24 in > > defconfigs, I find > > > > boards/arm/samv7/same70-xplained/ > > boards/arm/samv7/samv71-xult/ > > boards/arm/xmc4/xmc4500-relax > > > > There is even simulated AT24 support: > > > > boars/sim/sim/sim > > > > You should be able to duplicate the logic from the samv7 boards. > > > > > >
