Porting PicoTCP WIP

kernel/picotcp/include/arch/pico_pic24.h

@@ -0,0 +1,100 @@
+/*********************************************************************
+   PicoTCP. Copyright (c) 2012-2017 Altran Intelligent Systems. Some rights reserved.
+   See COPYING, LICENSE.GPLv2 and LICENSE.GPLv3 for usage.
+ *********************************************************************/
+#ifndef PICO_SUPPORT_PIC24
+#define PICO_SUPPORT_PIC24
+#define dbg printf
+/* #define dbg(...) */
+
+/*************************/
+
+/*** MACHINE CONFIGURATION ***/
+#include <stdio.h>
+#include <stdint.h>
+
+/* #include "phalox_development_board.h" */
+
+#ifndef __PIC24F__
+#define __PIC24F__
+#endif
+
+/*
+   #ifndef __PIC24FJ256GA106__
+   #define __PIC24FJ256GA106__
+   #endif
+ */
+
+#ifndef PICO_MAX_SOCKET_FRAMES
+#define PICO_MAX_SOCKET_FRAMES 16
+#endif
+
+/* Device header file */
+
+#if defined(__PIC24E__)
+# include <p24Exxxx.h>
+#elif defined(__PIC24F__)
+# include <p24Fxxxx.h>
+#elif defined(__PIC24H__)
+# include <p24Hxxxx.h>
+#endif
+
+
+#define TIMBASE_INT_E         IEC0bits.T2IE
+
+#ifdef PICO_SUPPORT_DEBUG_MEMORY
+static inline void *pico_zalloc(int len)
+{
+    /* dbg("%s: Alloc object of len %d, caller: %p\n", __FUNCTION__, len, __builtin_return_address(0)); */
+    return calloc(len, 1);
+}
+
+static inline void pico_free(void *tgt)
+{
+    /* dbg("%s: Discarded object @%p, caller: %p\n", __FUNCTION__, tgt, __builtin_return_address(0)); */
+    free(tgt);
+}
+#else
+# define pico_zalloc(x) calloc(x, 1)
+# define pico_free(x) free(x)
+#endif
+
+extern void *pvPortMalloc( size_t xWantedSize );
+extern volatile pico_time __pic24_tick;
+
+static inline unsigned long PICO_TIME(void)
+{
+    unsigned long tick;
+    /* Disable timer interrupts */
+    TIMBASE_INT_E = 0;
+    tick = __pic24_tick;
+    /* Enable timer interrupts */
+    TIMBASE_INT_E = 1;
+    return tick / 1000;
+}
+
+static inline unsigned long PICO_TIME_MS(void)
+{
+    unsigned long tick;
+    /* Disable timer interrupts */
+    TIMBASE_INT_E = 0;
+    tick = __pic24_tick;
+    /* Enable timer interrupts */
+    TIMBASE_INT_E = 1;
+    return tick;
+}
+
+static inline void PICO_IDLE(void)
+{
+    unsigned long tick_now;
+    /* Disable timer interrupts */
+    TIMBASE_INT_E = 0;
+    tick_now = (unsigned long)pico_tick;
+    /* Enable timer interrupts */
+    TIMBASE_INT_E = 1;
+    /* Doesn't matter that this call isn't interrupt safe, */
+    /* we just check for the value to change */
+    while(tick_now == __pic24_tick) ;
+}
+
+#endif