Elijah Orr / mbed-renbed

Fork of the official mbed C/C SDK provides the software platform and libraries to build your applications for RenBED.

Dependents:   1-RenBuggyTimed RenBED_RGB RenBED_RGB_PWM RenBED_RGB

Fork of mbed by mbed official

Diff: TARGET_NRF51_DONGLE/nrf_delay.h

Revision:
97:433970e64889
Child:
102:da0ca467f8b5
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TARGET_NRF51_DONGLE/nrf_delay.h	Tue Apr 14 10:58:58 2015 +0200
@@ -0,0 +1,74 @@
+#ifndef _NRF_DELAY_H
+#define _NRF_DELAY_H
+
+// #include "nrf.h"
+
+/*lint --e{438, 522} "Variable not used" "Function lacks side-effects" */
+#if defined ( __CC_ARM   )
+static __ASM void __INLINE nrf_delay_us(uint32_t volatile number_of_us)
+{
+loop
+        SUBS    R0, R0, #1
+        NOP
+        NOP
+        NOP
+        NOP
+        NOP
+        NOP
+        NOP
+        NOP
+        NOP
+        NOP
+        NOP
+        NOP
+        BNE    loop
+        BX     LR
+}
+#elif defined ( __ICCARM__ )
+static void __INLINE nrf_delay_us(uint32_t volatile number_of_us)
+{
+__ASM (
+"loop:\n\t"
+       " SUBS R0, R0, #1\n\t"
+       " NOP\n\t"
+       " NOP\n\t"
+       " NOP\n\t"
+       " NOP\n\t"
+       " NOP\n\t"
+       " NOP\n\t"
+       " NOP\n\t"
+       " NOP\n\t"
+       " NOP\n\t"
+       " NOP\n\t"
+       " NOP\n\t"
+       " NOP\n\t"
+       " BNE loop\n\t");
+}
+#elif defined   (  __GNUC__  )
+static void __INLINE nrf_delay_us(uint32_t volatile number_of_us)
+{
+    do 
+    {
+    __ASM volatile (
+        "NOP\n\t"
+        "NOP\n\t"
+        "NOP\n\t"
+        "NOP\n\t"
+        "NOP\n\t"
+        "NOP\n\t"
+        "NOP\n\t"
+        "NOP\n\t"
+        "NOP\n\t"
+        "NOP\n\t"
+        "NOP\n\t"
+        "NOP\n\t"
+        "NOP\n\t"
+        "NOP\n\t"
+    );
+    } while (--number_of_us);
+}
+#endif
+
+void nrf_delay_ms(uint32_t volatile number_of_ms);
+
+#endif