added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
targets/cmsis/TARGET_ARM_SSG/TARGET_IOTSS_BEID/system_CMSDK_BEID.c@147:ba84b7dc41a7, 2016-09-10 (annotated)
- Committer:
- JojoS
- Date:
- Sat Sep 10 15:32:04 2016 +0000
- Revision:
- 147:ba84b7dc41a7
- Parent:
- 80:bdf1132a57cf
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?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 80:bdf1132a57cf | 1 | /* MPS2 CMSIS Library |
mbed_official | 80:bdf1132a57cf | 2 | * |
mbed_official | 80:bdf1132a57cf | 3 | * Copyright (c) 2006-2016 ARM Limited |
mbed_official | 80:bdf1132a57cf | 4 | * All rights reserved. |
mbed_official | 80:bdf1132a57cf | 5 | * |
mbed_official | 80:bdf1132a57cf | 6 | * Redistribution and use in source and binary forms, with or without |
mbed_official | 80:bdf1132a57cf | 7 | * modification, are permitted provided that the following conditions are met: |
mbed_official | 80:bdf1132a57cf | 8 | * |
mbed_official | 80:bdf1132a57cf | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 80:bdf1132a57cf | 10 | * this list of conditions and the following disclaimer. |
mbed_official | 80:bdf1132a57cf | 11 | * |
mbed_official | 80:bdf1132a57cf | 12 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 80:bdf1132a57cf | 13 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 80:bdf1132a57cf | 14 | * and/or other materials provided with the distribution. |
mbed_official | 80:bdf1132a57cf | 15 | * |
mbed_official | 80:bdf1132a57cf | 16 | * 3. Neither the name of the copyright holder nor the names of its contributors |
mbed_official | 80:bdf1132a57cf | 17 | * may be used to endorse or promote products derived from this software without |
mbed_official | 80:bdf1132a57cf | 18 | * specific prior written permission. |
mbed_official | 80:bdf1132a57cf | 19 | * |
mbed_official | 80:bdf1132a57cf | 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 80:bdf1132a57cf | 21 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 80:bdf1132a57cf | 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
mbed_official | 80:bdf1132a57cf | 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
mbed_official | 80:bdf1132a57cf | 24 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
mbed_official | 80:bdf1132a57cf | 25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
mbed_official | 80:bdf1132a57cf | 26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
mbed_official | 80:bdf1132a57cf | 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
mbed_official | 80:bdf1132a57cf | 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
mbed_official | 80:bdf1132a57cf | 29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
mbed_official | 80:bdf1132a57cf | 30 | * POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 80:bdf1132a57cf | 31 | ******************************************************************************* |
mbed_official | 80:bdf1132a57cf | 32 | * @file system_CMSDK_BEID.c |
mbed_official | 80:bdf1132a57cf | 33 | * @brief CMSIS Device System Source File for |
mbed_official | 80:bdf1132a57cf | 34 | * CMSDK_BEID Device |
mbed_official | 80:bdf1132a57cf | 35 | * |
mbed_official | 80:bdf1132a57cf | 36 | *******************************************************************************/ |
mbed_official | 80:bdf1132a57cf | 37 | |
mbed_official | 80:bdf1132a57cf | 38 | |
mbed_official | 80:bdf1132a57cf | 39 | #include "CMSDK_BEID.h" |
mbed_official | 80:bdf1132a57cf | 40 | |
mbed_official | 80:bdf1132a57cf | 41 | /*---------------------------------------------------------------------------- |
mbed_official | 80:bdf1132a57cf | 42 | Define clocks |
mbed_official | 80:bdf1132a57cf | 43 | *----------------------------------------------------------------------------*/ |
mbed_official | 80:bdf1132a57cf | 44 | #define __XTAL (48000000UL) /* Oscillator frequency */ |
mbed_official | 80:bdf1132a57cf | 45 | |
mbed_official | 80:bdf1132a57cf | 46 | #define __SYSTEM_CLOCK (__XTAL / 2) |
mbed_official | 80:bdf1132a57cf | 47 | |
mbed_official | 80:bdf1132a57cf | 48 | |
mbed_official | 80:bdf1132a57cf | 49 | /*---------------------------------------------------------------------------- |
mbed_official | 80:bdf1132a57cf | 50 | Clock Variable definitions |
mbed_official | 80:bdf1132a57cf | 51 | *----------------------------------------------------------------------------*/ |
mbed_official | 80:bdf1132a57cf | 52 | uint32_t SystemCoreClock = __SYSTEM_CLOCK;/*!< System Clock Frequency (Core Clock)*/ |
mbed_official | 80:bdf1132a57cf | 53 | |
mbed_official | 80:bdf1132a57cf | 54 | |
mbed_official | 80:bdf1132a57cf | 55 | /*---------------------------------------------------------------------------- |
mbed_official | 80:bdf1132a57cf | 56 | Clock functions |
mbed_official | 80:bdf1132a57cf | 57 | *----------------------------------------------------------------------------*/ |
mbed_official | 80:bdf1132a57cf | 58 | /** |
mbed_official | 80:bdf1132a57cf | 59 | * Update SystemCoreClock variable |
mbed_official | 80:bdf1132a57cf | 60 | * |
mbed_official | 80:bdf1132a57cf | 61 | * @param none |
mbed_official | 80:bdf1132a57cf | 62 | * @return none |
mbed_official | 80:bdf1132a57cf | 63 | * |
mbed_official | 80:bdf1132a57cf | 64 | * @brief Updates the SystemCoreClock with current core Clock |
mbed_official | 80:bdf1132a57cf | 65 | * retrieved from cpu registers. |
mbed_official | 80:bdf1132a57cf | 66 | */ |
mbed_official | 80:bdf1132a57cf | 67 | void SystemCoreClockUpdate (void) |
mbed_official | 80:bdf1132a57cf | 68 | { |
mbed_official | 80:bdf1132a57cf | 69 | |
mbed_official | 80:bdf1132a57cf | 70 | SystemCoreClock = __SYSTEM_CLOCK; |
mbed_official | 80:bdf1132a57cf | 71 | |
mbed_official | 80:bdf1132a57cf | 72 | } |
mbed_official | 80:bdf1132a57cf | 73 | |
mbed_official | 80:bdf1132a57cf | 74 | /** |
mbed_official | 80:bdf1132a57cf | 75 | * Initialize the system |
mbed_official | 80:bdf1132a57cf | 76 | * |
mbed_official | 80:bdf1132a57cf | 77 | * @param none |
mbed_official | 80:bdf1132a57cf | 78 | * @return none |
mbed_official | 80:bdf1132a57cf | 79 | * |
mbed_official | 80:bdf1132a57cf | 80 | * @brief Setup the microcontroller system. |
mbed_official | 80:bdf1132a57cf | 81 | * Initialize the System. |
mbed_official | 80:bdf1132a57cf | 82 | */ |
mbed_official | 80:bdf1132a57cf | 83 | void SystemInit (void) |
mbed_official | 80:bdf1132a57cf | 84 | { |
mbed_official | 80:bdf1132a57cf | 85 | |
mbed_official | 80:bdf1132a57cf | 86 | #ifdef UNALIGNED_SUPPORT_DISABLE |
mbed_official | 80:bdf1132a57cf | 87 | SCB->CCR |= SCB_CCR_UNALIGN_TRP_Msk; |
mbed_official | 80:bdf1132a57cf | 88 | #endif |
mbed_official | 80:bdf1132a57cf | 89 | |
mbed_official | 80:bdf1132a57cf | 90 | SystemCoreClock = __SYSTEM_CLOCK; |
mbed_official | 80:bdf1132a57cf | 91 | |
mbed_official | 80:bdf1132a57cf | 92 | // Enable AHB and APB clock |
mbed_official | 80:bdf1132a57cf | 93 | CMSDK_SYSCON->AHBCLKCFG0SET = 0xF; // GPIO |
mbed_official | 80:bdf1132a57cf | 94 | CMSDK_SYSCON->APBCLKCFG0SET = 0xF9B7; // UART0, UART1, TIMER0, TIMER1, DUAL TIMER |
mbed_official | 80:bdf1132a57cf | 95 | } |