Revision 0:44fb10b45c97, committed 2017-12-27

Comitter:

emcu

Date:

Wed Dec 27 16:32:20 2017 +0000

Child:

1:0de89eebb160

Commit message:

How to use the Adafruit Motor Shield on STM32 NUCLEO; 74HC595 + L293D

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Dec 27 16:32:20 2017 +0000
@@ -0,0 +1,130 @@
+/*
+
+ By: www.emcu.eu
+ Date: December 2018
+ Simple test for: How to use the Adafruit Motor Shield on STM32 NUCLEO
+                  the explanations are here:
+                  http://www.emcu.eu/how-to-use-the-adafruit-motor-shield-on-stm32-nucleo/
+ UART Configuration (It is necessary for see the results, we suggest to use TeraTerm on PC)  
+    Baud Rate:    9600 
+    Data Bit:     8
+    Parity:       NONE
+    Stop Bit:     1
+    Flow Control: NONE
+
+ ATTENTION
+ THE SOFTWARE AND HARDWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+ FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS 
+ OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
+ WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 
+ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ 
+*/
+
+
+#include "mbed.h"
+
+Serial pc(USBTX,USBRX);
+DigitalOut LED(LED1);
+
+DigitalOut clockpin(PB_5);  // SCHP or SCK - PB_5
+DigitalOut latchpin(PA_6);  // STCP or RCK - PA_6
+DigitalOut OE(PA_8);        // OE or G
+DigitalOut datapin(PA_9);   // DS or SER - PA_9
+
+DigitalIn PULS(USER_BUTTON);
+
+void PressBB(void);
+void WaitSerialChar(void);
+
+int n = 0;
+
+
+int main() {
+    
+const int number[10][8]= 
+{//  Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0    Line
+   { 1, 0, 1, 0, 1, 0, 1, 0}, // 0     
+   { 0, 1, 0, 1, 0, 1, 0, 1}, // 1      
+   { 1, 0, 1, 1, 0, 1, 1, 0}, // 2
+   { 1, 0, 0, 1, 1, 1, 1, 1}, // 3
+   { 1, 1, 0, 0, 1, 1, 0, 0}, // 4
+   { 1, 1, 0, 1, 1, 0, 1, 1}, // 5
+   { 1, 1, 1, 1, 1, 0, 0, 0}, // 6
+   { 0, 0, 0, 0, 1, 1, 1, 1}, // 7
+   { 1, 1, 1, 1, 1, 1, 1, 0}, // 8
+   { 1, 1, 0, 0, 1, 1, 1, 1}  // 9
+};
+
+pc.printf("\n\r\n\r\n\r The explanations are here:\n\r");
+pc.printf(" http://www.emcu.eu/how-to-use-the-adafruit-motor-shield-on-stm32-nucleo/ \n\r");
+    while(1) 
+    {   
+        OE = 0;
+        
+        pc.printf("\n\r\n\r START... \n\r\n\r");
+        pc.printf("     74HC595 \n\r");
+        pc.printf("     _______ \n\r"); 
+        pc.printf(" Q1 1  |_|  16 VCC \n\r"); 
+        pc.printf(" Q2 2       15 Q0  \n\r"); 
+        pc.printf(" Q3 3       14 DS  \n\r"); 
+        pc.printf(" Q4 4       13 /OE \n\r");
+        pc.printf(" Q5 5       12 STCP\n\r");
+        pc.printf(" Q6 6       11 SHCP\n\r");
+        pc.printf(" Q7 7       10 /MR \n\r");
+        pc.printf("GND 8_______ 9 Q7S \n\r\n\r");
+        
+        for(int j=0;j<=1;j++) // 9
+        {  
+            latchpin=0;
+            
+            pc.printf(" Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0\n\r");
+            for(int i=0;i<=7;i++)  
+            {
+                pc.printf(" %d ", number[j][i]);
+                datapin=number[j][i];
+                wait_ms(1);
+                clockpin=1;
+                wait_ms(1);
+                clockpin=0;
+                wait_ms(1);
+            }
+
+            latchpin=1;  
+            wait_ms(5);
+            latchpin=0;
+            wait_ms(1);
+            OE = 1;
+            wait_ms(1);
+            OE = 0;
+            wait_ms(1);
+                                  
+            WaitSerialChar();
+            pc.printf(" \n\r");
+               
+         }
+        pc.printf(" END.... \n\r");
+        WaitSerialChar();
+        
+    }
+}
+
+
+void WaitSerialChar(void)
+{
+    pc.printf(" Press a key on PC to continue\n\r");
+    while (pc.readable() != 1);
+    pc.getc();
+}
+
+    
+void PressBB(void)
+{
+    pc.printf("Press Blue Button on PC to continue\n\r");
+    while (PULS != 0)  // Button not pressed
+    {
+        LED = !LED;
+        wait(0.1);
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Wed Dec 27 16:32:20 2017 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/7130f322cb7e
\ No newline at end of file