Diff: a7105txrx.cpp

Revision:

0:212eb977fe10

Child:

2:35a860dbaba5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/a7105txrx.cpp	Mon Sep 01 19:38:06 2014 +0000
@@ -0,0 +1,39 @@
+#include "mbed.h"
+#include "a7105txrx.h"
+
+A7105::A7105(PinName mosi, PinName miso, PinName clk, PinName cs, uint32_t freqHz) :
+        mSpiMaster(mosi, miso, clk), mChipSelect(cs) {
+    mSpiMaster.frequency(freqHz);
+    // Chip select is active low so set it to high until we are ready
+    mChipSelect = 1;
+}
+
+A7105::~A7105() {}
+
+uint8_t A7105::writeRegister(uint8_t regAddr, uint8_t value) {
+    // assert CS
+    mChipSelect = 0;
+    // write register, most significant bit should be one to indicate a write
+    mSpiMaster.write(regAddr | 0x80);
+    // write value into register
+    uint8_t ret = mSpiMaster.write(value);
+    // de-assert CS
+    mChipSelect = 1;
+    
+    return ret;
+}
+
+uint8_t A7105::readRegister(uint8_t regAddr) {
+    // assert CS
+    mChipSelect = 0;
+    // write register and read value
+    uint8_t ret = mSpiMaster.write(regAddr);
+    // de-assert CS
+    mChipSelect = 1;
+    
+    return ret;
+}
+
+uint8_t A7105::reset() {
+    return writeRegister(MODE, 0x00);
+}
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