oehansens i2c and spi extensions

2013-04-15 06:19:00 +00:00
parent e99525ceee
commit efd01c2fa3
81 changed files with 48740 additions and 0 deletions
--- a/i2cspi_BaS_gcc/sources/basflash_start.c
+++ b/i2cspi_BaS_gcc/sources/basflash_start.c
@@ -0,0 +1,26 @@
+/*
+ * basflash_start.c
+ *
+ *  Created on: 16.02.2013
+ *      Author: mfro
+ */
+
+#include <stdint.h>
+
+static uint32_t ownstack[4096];
+static uint32_t *stackptr = &ownstack[4095];
+
+/*
+ * setup our own stack in SDRAM to prevent clashing BaS's in SRAM (size limited).
+ */
+void startup(void)
+{
+	static uint32_t oldstack;
+
+	void basflash(void);
+	__asm__ __volatile__("move.l	sp,%0\n\t" : "=g"(oldstack) : :);
+	__asm__ __volatile__("move.l	%0,sp\n\t" : : "g"(stackptr) : );
+	basflash();
+	__asm__ __volatile__("move.l	%0,sp\n\t" : : "g"(oldstack) : "sp");
+	(void) stackptr; /* make compiler happy about unused variables */
+}