Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/TOOLCHAIN_ARM_STD/sys.cpp@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
144:ef7eb2e8f9f7 
added prescaler for 16 bit timers (solution as in LPC11xx), default prescaler 31 for max 28 ms period time

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library - stackheap
<> 144:ef7eb2e8f9f7 2 * Copyright (C) 2009-2011 ARM Limited. All rights reserved.
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Setup a fixed single stack/heap memory model,
<> 144:ef7eb2e8f9f7 5 * between the top of the RW/ZI region and the stackpointer
<> 144:ef7eb2e8f9f7 6 */
<> 144:ef7eb2e8f9f7 7
<> 144:ef7eb2e8f9f7 8 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 9 extern "C" {
<> 144:ef7eb2e8f9f7 10 #endif
<> 144:ef7eb2e8f9f7 11
<> 144:ef7eb2e8f9f7 12 #include <rt_misc.h>
<> 144:ef7eb2e8f9f7 13 #include <stdint.h>
<> 144:ef7eb2e8f9f7 14
<> 144:ef7eb2e8f9f7 15 extern char Image$$RW_IRAM1$$ZI$$Limit[];
<> 144:ef7eb2e8f9f7 16
<> 144:ef7eb2e8f9f7 17 extern __value_in_regs struct __initial_stackheap __user_setup_stackheap(uint32_t R0, uint32_t R1, uint32_t R2, uint32_t R3) {
<> 144:ef7eb2e8f9f7 18 uint32_t zi_limit = (uint32_t)Image$$RW_IRAM1$$ZI$$Limit;
<> 144:ef7eb2e8f9f7 19 uint32_t sp_limit = __current_sp();
<> 144:ef7eb2e8f9f7 20
<> 144:ef7eb2e8f9f7 21 zi_limit = (zi_limit + 7) & ~0x7; // ensure zi_limit is 8-byte aligned
<> 144:ef7eb2e8f9f7 22
<> 144:ef7eb2e8f9f7 23 struct __initial_stackheap r;
<> 144:ef7eb2e8f9f7 24 r.heap_base = zi_limit;
<> 144:ef7eb2e8f9f7 25 r.heap_limit = sp_limit;
<> 144:ef7eb2e8f9f7 26 return r;
<> 144:ef7eb2e8f9f7 27 }
<> 144:ef7eb2e8f9f7 28
<> 144:ef7eb2e8f9f7 29 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 30 }
<> 144:ef7eb2e8f9f7 31 #endif