Diff: IO/IOSampleZB.cpp

Revision:

0:fcaad0dfa051

Child:

3:8662ebe83570

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/IO/IOSampleZB.cpp	Fri May 08 11:50:56 2015 +0200
@@ -0,0 +1,69 @@
+#include "XBeeLib.h"
+#include "IO/IOSampleZB.h"
+
+#define IO_SAMPLE_ZB_MIN_SIZE              (2 + 1 + 2)
+
+using namespace XBeeLib;
+
+IOSampleZB::IOSampleZB(const uint8_t* const raw_data, size_t size)
+{
+    assert(size >= IO_SAMPLE_ZB_MIN_SIZE);
+    assert(size <= sizeof _sampled_data);
+
+    _digital_mask = UINT16(raw_data[1], raw_data[2]);
+    _analog_mask = raw_data[3];
+    _sampled_data_size = size - 4;
+    memcpy(&_sampled_data[0], &raw_data[4], _sampled_data_size);
+}
+
+IOSampleZB::~IOSampleZB()
+{
+
+}
+
+RadioStatus IOSampleZB::get_dio(XBeeZB::IoLine line, DioVal* const dio_value) const
+{
+    const uint16_t mask = 1 << line;
+    if (mask & _digital_mask) {
+        const uint16_t digital_channels = get_digital_channels();
+
+        *dio_value = digital_channels & mask ? High : Low;
+        return Success;
+    }
+    return Failure;
+}
+
+RadioStatus IOSampleZB::get_adc(XBeeZB::IoLine line, uint16_t* const val) const
+{
+    const uint8_t line_mask = 1 << line;
+    const bool adc_present = line_mask & _analog_mask;
+    if (!adc_present) {
+        return Failure;
+    }
+
+    uint8_t analog_data_idx = _digital_mask == 0 ? 0 : 2;
+    uint8_t line_sample = 0;
+
+    while (analog_data_idx < _sampled_data_size) {
+        if (_analog_mask & (1 << line_sample)) {
+            if (line_sample == line) {
+                /* Write the analog value */
+                *val = UINT16(_sampled_data[analog_data_idx], _sampled_data[analog_data_idx + 1]);
+                break;
+            }
+            analog_data_idx += 2;
+        }
+        line_sample++;
+    }
+
+    return Success;
+}
+
+inline uint16_t IOSampleZB::get_digital_channels(void) const
+{
+    if (_digital_mask == 0) {
+        return 0;
+    }
+    return UINT16(_sampled_data[0], _sampled_data[1]);
+}
+