From 15bc8664b5dcc755f55b7931f532c9fc58e991f9 Mon Sep 17 00:00:00 2001
From: Kody Stribrny <89810515+kstribrnAmzn@users.noreply.github.com>
Date: Fri, 15 Apr 2022 08:13:14 -0700
Subject: [PATCH] Add atomic flag for 16-bit ticks PIC24 (#488)

This change allows the PIC24 family of
16 bit processors to read the tick count
without a critical section when the tick
count is 16 bits.

Inspired from discussion - https://forums.freertos.org/t/xtaskgettickcount-with-critical-section-on-16-bit-mcu/14860/5
---
 portable/MPLAB/PIC24_dsPIC/portmacro.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/portable/MPLAB/PIC24_dsPIC/portmacro.h b/portable/MPLAB/PIC24_dsPIC/portmacro.h
index 223e4936b..0974bc33b 100644
--- a/portable/MPLAB/PIC24_dsPIC/portmacro.h
+++ b/portable/MPLAB/PIC24_dsPIC/portmacro.h
@@ -59,6 +59,9 @@ typedef unsigned short UBaseType_t;
 #if( configUSE_16_BIT_TICKS == 1 )
 	typedef uint16_t TickType_t;
 	#define portMAX_DELAY ( TickType_t ) 0xffff
+/* 16-bit tick type on a 16-bit architecture, so reads of the tick count do
+ * not need to be guarded with a critical section. */
+	#define portTICK_TYPE_IS_ATOMIC 1
 #else
 	typedef uint32_t TickType_t;
 	#define portMAX_DELAY ( TickType_t ) 0xffffffffUL