Revision 2:1023408260e5, committed 2018-11-01

Comitter:

jiuk

Date:

Thu Nov 01 12:37:27 2018 +0000

Parent:

1:d154278f2ca1

Commit message:

Spi esclavo prueba led

Changed in this revision

diff -r d154278f2ca1 -r 1023408260e5 main.cpp
--- a/main.cpp	Wed Dec 06 08:46:12 2017 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,107 +0,0 @@
-#include "mbed.h"
-/*
-    AUTHOR  Mariwan Jalal
-   These projects try to make a communications channel between to NUCELO-L476RG
-   using SPI protocol (Slave-Master). 
-   You can send any kind of object and reproduced between the two module 
-    USE IT AT YOUR OWN RESPONSIBILITY .. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND
-
-*/
-
-/*
-    These projects should be used together
-    SPI_NUCLEO_MASTER
-    SPI_NUCLEO_SLAVE
-*/
-
-/*
-Slave communication is shifted by one byte. To respond for ex for a START byte,
-you need to put the ACK byte prepared on the bus even before having the START
-byte received by the slave. As the Master write the SPI bus the START Command,
-the prepared byte on the slave SPI bus will be transferred to the Master
-immediately. So, you need to prepare the Slave device to shift the bytes by
-one byte  as in the following example.
-*/
-
-
-
-Serial pc(USBTX,USBRX);
-
-
-
-#define SPI_DUMMY     0X0000
-#define SPI_CMD       0XADAD     //Anything as a CMD code.
-#define SPI_FAULT     0xDD00       //Anything as a part of 16 bit as control byte
-
-#ifdef _DEBUG
-extern Serial pc;
-#define DEBUG_MESSAGE(...) pc.printf(__VA_ARGS__)
-#else
-#define DEBUG_MESSAGE(...)
-#endif
-
-typedef unsigned char byte;
-
-SPISlave slave(SPI_MOSI, SPI_MISO, SPI_SCK ,PA_4);
-int res=0;
-float d,c,e;
-
-/*This will be the float number we wish to transfer. 
-You can make a struct of multiple variable and send it in the same way*/
-
-typedef union {
-float sensor;
-byte SPI_Packet[sizeof(float)];
-}SPI_Packet_t;
-
-SPI_Packet_t packet;
-int main()
-{
-    pc.printf("Testing is started from slave side\n");
-    slave.format(16,0);
-    slave.frequency(1000000);
-    unsigned short vs=0;
-    slave.reply(SPI_DUMMY);   // Prime reply
-    unsigned short tempVal=0;
-    packet.sensor=1000.02;    //Value of the float number we wish to communicate
-    while(1) {
-        if(slave.receive()) {
-            tempVal=(unsigned short) slave.read();        //Real command
-            printf("----------------\n%x\n",tempVal);
-            /*
-                The switch is not necessary if you have only one command between
-                 master-slave. This is useful if you wish to send different 
-                 object depending on the command.
-            */
-            switch(tempVal){
-            case SPI_CMD: {    /*Use this if you have different commands 
-                                for sending different objects to the master.*/
-                            tempVal=(sizeof(float))<<8| packet.SPI_Packet[0];
-                            pc.printf("Packet=%x\n",tempVal);
-                            slave.reply(tempVal);
-                            for(unsigned int i=1; i<sizeof(float); i++){
-                                while(!(slave.receive()))
-                                    wait_ms(1);
-                            vs=slave.read();        //Real command
-                            if (vs==SPI_DUMMY){
-                                //Continue sending bytes
-                                {
-                                  tempVal=0x00FF & packet.SPI_Packet[i];
-                                  pc.printf("Packet=%x\n",tempVal);
-                                  slave.reply(tempVal);
-                                }
-                            }
-                            else {
-                                slave.reply(SPI_FAULT); //ERROR CODE
-                                break;
-                            }
-                        }
-                    }
-
-                    break;
-            }
-
-         }
-
-    }
-}

diff -r d154278f2ca1 -r 1023408260e5 spi_slave.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spi_slave.cpp	Thu Nov 01 12:37:27 2018 +0000
@@ -0,0 +1,63 @@
+// Send a byte to a SPI slave, and record the response
+#include "mbed.h"
+
+// hardware ssel (where applicable)
+//SPI device(PC_11, PC_12, PC_10,PA_15); // mosi, miso, sclk, ssel
+
+// software ssel
+//SPI device(PC_12, PC_11, PC_10); // mosi, miso, sclk
+//DigitalOut cs(PA_15); // ssel
+SPI deviceM(PB_15, PB_14, PB_13);
+DigitalOut ssel (PB_12);
+InterruptIn button(USER_BUTTON);
+DigitalOut led(LED1);
+Serial command(USBTX,USBRX);
+//Serial com_tar(PC_10,PC_11); //master f446R
+Serial com_tar(PA_15,PB_7); //slave f411R
+
+uint8_t a=0;
+
+void sendSPI(uint8_t d1, uint8_t d2)
+{
+    deviceM.unlock();
+    ssel=0;
+    deviceM.write(d1); 
+    deviceM.write(d2);
+    ssel=1;
+    deviceM.lock();
+}
+
+double delay = 0.5; // 500 ms
+
+void pressed()
+{
+    delay = 0.1; // 100 ms
+    a=1;
+    //sendSPI(a,3);
+    command.printf("\n valor de a= %d",a);
+    com_tar.putc(a);
+}
+
+void released()
+{
+    delay = 1; // 500 ms
+    a=0;
+    //sendSPI(a,3);
+    command.printf("\n valor de a= %d",a);
+    com_tar.putc(a);
+}
+
+int main()
+{
+    // Assign functions to button
+    button.fall(&pressed);
+    button.rise(&released);
+
+    while (1) {
+        int prender=com_tar.getc();
+        if(prender==0){
+        led = !led;
+        wait(delay);  
+        }
+    }
+}