Diff: MAX11043/MAX11043.h

Revision:

69:989e392cf635

Parent:

68:ffee1e54d3fe

Child:

70:f44a577c9e59

diff -r ffee1e54d3fe -r 989e392cf635 MAX11043/MAX11043.h
--- a/MAX11043/MAX11043.h	Thu Feb 20 10:21:21 2020 +0000
+++ b/MAX11043/MAX11043.h	Fri Feb 21 00:45:32 2020 +0000
@@ -64,6 +64,26 @@
 #ifndef __MAX11043_H__
 #define __MAX11043_H__
 
+//--------------------------------------------------
+// MAX11043 ADC Read operations must be synchronized to EOC End Of Conversion
+// EOC# asserts low when new data is available.
+// Initiate a data read prior to the next rising edge of EOC# or the result is overwritten.
+#ifndef MAX11043_EOC_INTERRUPT_POLLING
+#define MAX11043_EOC_INTERRUPT_POLLING 1
+#endif // MAX11043_EOC_INTERRUPT_POLLING
+//--------------------------------------------------
+// MAX11043 ADC Read operations must be synchronized to EOC End Of Conversion
+// EOC# asserts low when new data is available.
+// Initiate a data read prior to the next rising edge of EOC# or the result is overwritten.
+#if MAX11043_EOC_INTERRUPT_POLLING
+// MAX11043 EOC End Of Conversion input should be InterruptIn(PinName:EOC_pin).fall(onEOCFallingEdge);
+// Workaround using DigitalIn(PinName:EOC_pin) polled to sync with EOC falling edge for ADC reads
+// 2020-02-20 MAX11043_EOC_INTERRUPT_POLLING works on MAX32625MBED at 9us conversion rate, with 1us timing margin
+#else // MAX11043_EOC_INTERRUPT_POLLING
+// MAX11043 EOC End Of Conversion input is InterruptIn(PinName:EOC_pin).fall(onEOCFallingEdge);
+#endif // MAX11043_EOC_INTERRUPT_POLLING
+//--------------------------------------------------
+
 // standard include for target platform -- Platform_Include_Boilerplate
 #include "mbed.h"
 // Platforms:
@@ -554,7 +574,16 @@
             DigitalOut &DACSTEP_pin, // Digital Configuration Input to MAX11043 device
             DigitalOut &UP_slash_DWNb_pin, // Digital Configuration Input to MAX11043 device
             // CODE GENERATOR: class constructor declaration gpio OutputPin pins
+// MAX11043 ADC Read operations must be synchronized to EOC End Of Conversion
+#if MAX11043_EOC_INTERRUPT_POLLING
+// MAX11043 EOC End Of Conversion input should be InterruptIn(PinName:EOC_pin).fall(onEOCFallingEdge);
+// Workaround using DigitalIn(PinName:EOC_pin) polled to sync with EOC falling edge for ADC reads
+// TODO: onEOCFallingEdge: replace DigitalIn &EOC_pin with PinName EOC_pin, so that I can create an InterruptIn(PinName:EOC_pin)
             DigitalIn &EOC_pin, // Digital Event Output from MAX11043 device
+#else // MAX11043_EOC_INTERRUPT_POLLING
+// MAX11043 EOC End Of Conversion input is InterruptIn(PinName:EOC_pin).fall(onEOCFallingEdge);
+            InterruptIn &EOC_pin, // Digital Event Output from MAX11043 device
+#endif // MAX11043_EOC_INTERRUPT_POLLING
             MAX11043_ic_t ic_variant);
 
 // CODE GENERATOR: class destructor declaration