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mbed library sources

Dependents:   Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more

Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

Diff: targets/hal/TARGET_RENESAS/TARGET_RZ_A1H/us_ticker.c

Revision:
437:0b72c0f86db6
Parent:
430:d406b7919023
Child:
460:3bcf9be0332c
--- a/targets/hal/TARGET_RENESAS/TARGET_RZ_A1H/us_ticker.c	Thu Dec 11 14:15:07 2014 +0000
+++ b/targets/hal/TARGET_RENESAS/TARGET_RZ_A1H/us_ticker.c	Mon Dec 15 09:00:08 2014 +0000
@@ -28,6 +28,8 @@
 
 int us_ticker_inited = 0;
 static double count_clock = 0;
+static uint32_t last_read = 0;
+static uint32_t wrap_arround = 0;
 
 void us_ticker_interrupt(void) {
     us_ticker_irq_handler();
@@ -36,12 +38,12 @@
 void us_ticker_init(void) {
     if (us_ticker_inited) return;
     us_ticker_inited = 1;
-    
+
     /* set Counter Clock(us) */
     if (false == RZ_A1_IsClockMode0()) {
-        count_clock = (double)(CM1_RENESAS_RZ_A1_P0_CLK / US_TICKER_CLOCK_US_DEV);
+        count_clock = ((double)CM1_RENESAS_RZ_A1_P0_CLK / (double)US_TICKER_CLOCK_US_DEV);
     } else {
-        count_clock = (double)(CM0_RENESAS_RZ_A1_P0_CLK / US_TICKER_CLOCK_US_DEV);
+        count_clock = ((double)CM0_RENESAS_RZ_A1_P0_CLK / (double)US_TICKER_CLOCK_US_DEV);
     }
 
     /* Power Control for Peripherals      */
@@ -61,14 +63,21 @@
 
 uint32_t us_ticker_read() {
     uint32_t val;
+    uint64_t val64;
+
     if (!us_ticker_inited)
         us_ticker_init();
-    
+
     /* read counter */
     val = OSTM1CNT;
-    
+    if ( last_read > val ) {
+        wrap_arround++;
+    }
+    last_read = val;
+    val64 = ((uint64_t)wrap_arround << 32) + val;
+
     /* clock to us */
-    val = (uint32_t)(val / count_clock);
+    val = (uint32_t)(val64 / count_clock);
     return val;
 }