add max1227 module

mission/devices/max1227.cpp

@@ -0,0 +1,28 @@
+#include "max1227.h"
+
+#include <cstring>
+
+void max1227::prepareExternallyClockedSingleChannelRead(uint8_t *spiBuf, uint8_t channel,
+                                                        size_t &sz) {
+  spiBuf[0] = buildConvByte(ScanModes::N_ONCE, channel, false);
+  spiBuf[1] = 0x00;
+  spiBuf[2] = 0x00;
+  sz = 3;
+}
+
+void max1227::prepareExternallyClockedRead0ToN(uint8_t *spiBuf, uint8_t n, size_t &sz) {
+  for (uint8_t idx = 0; idx <= n; idx++) {
+    spiBuf[idx * 2] = buildConvByte(ScanModes::N_ONCE, idx, false);
+    spiBuf[idx * 2 + 1] = 0x00;
+  }
+  spiBuf[(n + 1) * 2] = 0x00;
+  sz += (n + 1) * 2 + 1;
+}
+
+void max1227::prepareExternallyClockedTemperatureRead(uint8_t *spiBuf, size_t &sz) {
+  spiBuf[0] = buildConvByte(ScanModes::N_ONCE, 0, true);
+  std::memset(spiBuf + 1, 0, 24);
+  sz += 25;
+}
+
+float max1227::getTemperature(int16_t temp) { return static_cast<float>(temp) * 0.125; }