Provide source clock frequency on RMT channel (#2980)

Co-authored-by: nfbot <[email protected]>

Author: AdrianSoundy

targets/ESP32/_nanoCLR/nanoFramework.Hardware.Esp32.Rmt/nanoFramework_hardware_esp32_rmt_native.cpp

@@ -84,12 +84,14 @@ static const CLR_RT_MethodHandler method_lookup[] =
     NULL,
     NULL,
     NULL,
-    NULL,
     Library_nanoFramework_hardware_esp32_rmt_native_nanoFramework_Hardware_Esp32_Rmt_RmtChannel::NativeSetGpioPin___VOID__I4__U1__I4__BOOLEAN,
     Library_nanoFramework_hardware_esp32_rmt_native_nanoFramework_Hardware_Esp32_Rmt_RmtChannel::NativeSetClockDivider___VOID__U1,
     Library_nanoFramework_hardware_esp32_rmt_native_nanoFramework_Hardware_Esp32_Rmt_RmtChannel::NativeSetNumberOfMemoryBlocks___VOID__U1,
     NULL,
     NULL,
+    Library_nanoFramework_hardware_esp32_rmt_native_nanoFramework_Hardware_Esp32_Rmt_RmtChannel::NativeGetSourceClockFrequency___STATIC__I4,
+    NULL,
+    NULL,
     NULL,
     NULL,
     NULL,
@@ -141,9 +143,9 @@ static const CLR_RT_MethodHandler method_lookup[] =
 const CLR_RT_NativeAssemblyData g_CLR_AssemblyNative_nanoFramework_Hardware_Esp32_Rmt =
 {
     "nanoFramework.Hardware.Esp32.Rmt",
-    0x608C5658,
+    0xB97BFDE3,
     method_lookup,
-    { 100, 0, 4, 0 }
+    { 100, 0, 5, 0 }
 };
 
 // clang-format on

targets/ESP32/_nanoCLR/nanoFramework.Hardware.Esp32.Rmt/nanoFramework_hardware_esp32_rmt_native.h

@@ -91,6 +91,7 @@ struct Library_nanoFramework_hardware_esp32_rmt_native_nanoFramework_Hardware_Es
     NANOCLR_NATIVE_DECLARE(NativeSetGpioPin___VOID__I4__U1__I4__BOOLEAN);
     NANOCLR_NATIVE_DECLARE(NativeSetClockDivider___VOID__U1);
     NANOCLR_NATIVE_DECLARE(NativeSetNumberOfMemoryBlocks___VOID__U1);
+    NANOCLR_NATIVE_DECLARE(NativeGetSourceClockFrequency___STATIC__I4);
 
     //--//
 

targets/ESP32/_nanoCLR/nanoFramework.Hardware.Esp32.Rmt/nanoFramework_hardware_esp32_rmt_native_nanoFramework_Hardware_Esp32_Rmt_RmtChannel.cpp

@@ -127,3 +127,18 @@ bool Library_nanoFramework_hardware_esp32_rmt_native_nanoFramework_Hardware_Esp3
 
     return true;
 }
+
+HRESULT Library_nanoFramework_hardware_esp32_rmt_native_nanoFramework_Hardware_Esp32_Rmt_RmtChannel::
+    NativeGetSourceClockFrequency___STATIC__I4(CLR_RT_StackFrame &stack)
+{
+    NANOCLR_HEADER();
+
+// Currently we use the default clock for all targets. This is 80Mhz except for H2 where it is 32Mhz.
+#if defined(CONFIG_IDF_TARGET_ESP32H2)
+    stack.SetResult_I4(32000000);
+#else
+    stack.SetResult_I4(80000000);
+#endif
+
+    NANOCLR_NOCLEANUP_NOLABEL();
+}