Hi Jan, > No don’t have. Why?
Because words/spirw.asm provides c!@spi which makes using the hardware spi easier, and it is used in the recipes http://amforth.sourceforge.net/TG/recipes/SPI.html Separately, if you haven't read it already https://en.wikipedia.org/wiki/Serial_Peripheral_Interface will help a lot, as will starting with a simple SPI device (e.g. io expander, digital potentiometer) first. Kind regards, Tristan > > Verstuurd vanaf mijn iPad > > > Op 7 jun. 2019 om 17:25 heeft Tristan Williams <h...@tjnw.co.uk> het > > volgende geschreven: > > > > Hello Jan, > > > > A quick question first. > > > > You have built your AmForth hex files with words/spirw.asm ? > > > > Kind regards, > > > > Tristan > > > >> On 07Jun19 17:06, Jan Kromhout via Amforth-devel wrote: > >> Hello > >> > >> I have take a close look into SPI routines. > >> I really not understand them. > >> > >> I need simple make a connection withe the arduino in amForth. > >> The basics I understand how to make a pin high or low etc. > >> But I don’t know how to start to initialize the SPI etc. > >> Can someone help me with this or give a simple example? > >> The interface is using the standard pins for the SPI. > >> > >> I mark the part of the code with <===========? where I have trouble to > >> convert to amForth. > >> > >> Thanks for any help. > >> > >> Cheers, > >> > >> Jan > >> > >> > >> #include "SPI.h" > >> > >> #define SCK_PIN 13 > >> #define MISO_PIN 12 > >> #define MOSI_PIN 11 > >> #define SS_PIN 10 > >> > >> void umFPU_begin(void) > >> { > >> digitalWrite(SS_PIN, HIGH); > >> pinMode(SS_PIN, OUTPUT); > >> umFPU_reset(); > >> } > >> > >> //------------------- reset > >> ------------------------------------------------- > >> > >> void umFPU_reset() > >> { > >> digitalWrite(SS_PIN, LOW); > >> > >> // disable SPI.Master > >> SPI.end(); <===========? > >> > >> // reset the FPU > >> digitalWrite(MOSI_PIN, HIGH); > >> for (byte i = 0; i < 80; i++) > >> { > >> digitalWrite(SCK_PIN, HIGH); > >> digitalWrite(SCK_PIN, LOW); > >> } > >> digitalWrite(MOSI_PIN, LOW); > >> > >> delay(10); > >> > >> // enable SPI.Master > >> SPI.setDataMode(SPI_MODE0); > >> SPI.setBitOrder(MSBFIRST); > >> SPI.setClockDivider(SPI_CLOCK_DIV4); > >> SPI.begin(); <===========? > >> > >> digitalWrite(SS_PIN, HIGH); > >> } > >> > >> byte umFPU_read(void) > >> { > >> byte bval; > >> digitalWrite(SS_PIN, LOW); > >> umFPU_readDelay(); > >> bval = SPI.transfer(0); <===========? > >> digitalWrite(SS_PIN, HIGH); > >> return bval; > >> } > >> > >> void umFPU_write_1(byte b1) > >> { > >> digitalWrite(SS_PIN, LOW); > >> SPI.transfer(b1); <===========? > >> digitalWrite(SS_PIN, HIGH); > >> } > >> > >> _______________________________________________ > >> Amforth-devel mailing list for http://amforth.sf.net/ > >> Amforth-devel@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/amforth-devel > > > > > > _______________________________________________ > > Amforth-devel mailing list for http://amforth.sf.net/ > > Amforth-devel@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/amforth-devel > > > > _______________________________________________ > Amforth-devel mailing list for http://amforth.sf.net/ > Amforth-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/amforth-devel _______________________________________________ Amforth-devel mailing list for http://amforth.sf.net/ Amforth-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amforth-devel
