Diff: main.cpp

Revision:

0:b09a91845bdb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Mar 18 15:03:37 2019 +0000
@@ -0,0 +1,29 @@
+#include "mbed.h"
+ 
+SPISlave device(PA_7, PA_6, PA_5, PA_4); // mosi, miso, sclk, ssel
+ 
+Serial pc(USBTX, USBRX); // tx, rx
+ 
+int main() {
+    pc.baud(115200);
+    int counter = 1;
+ 
+    device.format(8,3);        // Setup:  bit data, high steady state clock, 2nd edge capture
+    device.frequency(1000000); // 1MHz
+ 
+    int reply = pc.getc()-48;
+    device.reply(reply);              // Prime SPI with first reply
+    device.reply(reply);              // Prime SPI with first reply, again
+ 
+    pc.printf("======================================================\r\n");
+    pc.printf("Startup Next reply will be %d\r\n", reply);
+ 
+    while (1) {
+        if (device.receive()) {
+            int valueFromMaster = device.read();
+            pc.printf("%d Something rxvd, and should have replied with %d\n\r", counter++, reply);
+            device.reply(++reply);              // Prime SPI with next reply
+            pc.printf("    Received value from Master (%d) Next reply will be %d \r\n", valueFromMaster, reply);
+        }
+    }
+}
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