Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

common/mbed_board.c@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
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #include <stdio.h>
<> 144:ef7eb2e8f9f7 17 #include "gpio_api.h"
<> 144:ef7eb2e8f9f7 18 #include "wait_api.h"
<> 144:ef7eb2e8f9f7 19 #include "toolchain.h"
<> 144:ef7eb2e8f9f7 20 #include "mbed_interface.h"
<> 144:ef7eb2e8f9f7 21 #include "critical.h"
<> 144:ef7eb2e8f9f7 22 #include "serial_api.h"
<> 144:ef7eb2e8f9f7 23
<> 144:ef7eb2e8f9f7 24 #if DEVICE_SERIAL
<> 144:ef7eb2e8f9f7 25 extern int stdio_uart_inited;
<> 144:ef7eb2e8f9f7 26 extern serial_t stdio_uart;
<> 144:ef7eb2e8f9f7 27 #endif
<> 144:ef7eb2e8f9f7 28
<> 144:ef7eb2e8f9f7 29 WEAK void mbed_die(void) {
<> 144:ef7eb2e8f9f7 30 #if !defined (NRF51_H) && !defined(TARGET_EFM32)
<> 144:ef7eb2e8f9f7 31 core_util_critical_section_enter();
<> 144:ef7eb2e8f9f7 32 #endif
<> 144:ef7eb2e8f9f7 33 #if (DEVICE_ERROR_RED == 1)
<> 144:ef7eb2e8f9f7 34 gpio_t led_red; gpio_init_out(&led_red, LED_RED);
<> 144:ef7eb2e8f9f7 35 #elif (DEVICE_ERROR_PATTERN == 1)
<> 144:ef7eb2e8f9f7 36 gpio_t led_1; gpio_init_out(&led_1, LED1);
<> 144:ef7eb2e8f9f7 37 gpio_t led_2; gpio_init_out(&led_2, LED2);
<> 144:ef7eb2e8f9f7 38 gpio_t led_3; gpio_init_out(&led_3, LED3);
<> 144:ef7eb2e8f9f7 39 gpio_t led_4; gpio_init_out(&led_4, LED4);
<> 144:ef7eb2e8f9f7 40 #endif
<> 144:ef7eb2e8f9f7 41
<> 144:ef7eb2e8f9f7 42 while (1) {
<> 144:ef7eb2e8f9f7 43 #if (DEVICE_ERROR_RED == 1)
<> 144:ef7eb2e8f9f7 44 gpio_write(&led_red, 1);
<> 144:ef7eb2e8f9f7 45
<> 144:ef7eb2e8f9f7 46 #elif (DEVICE_ERROR_PATTERN == 1)
<> 144:ef7eb2e8f9f7 47 gpio_write(&led_1, 1);
<> 144:ef7eb2e8f9f7 48 gpio_write(&led_2, 0);
<> 144:ef7eb2e8f9f7 49 gpio_write(&led_3, 0);
<> 144:ef7eb2e8f9f7 50 gpio_write(&led_4, 1);
<> 144:ef7eb2e8f9f7 51 #endif
<> 144:ef7eb2e8f9f7 52
<> 144:ef7eb2e8f9f7 53 wait_ms(150);
<> 144:ef7eb2e8f9f7 54
<> 144:ef7eb2e8f9f7 55 #if (DEVICE_ERROR_RED == 1)
<> 144:ef7eb2e8f9f7 56 gpio_write(&led_red, 0);
<> 144:ef7eb2e8f9f7 57
<> 144:ef7eb2e8f9f7 58 #elif (DEVICE_ERROR_PATTERN == 1)
<> 144:ef7eb2e8f9f7 59 gpio_write(&led_1, 0);
<> 144:ef7eb2e8f9f7 60 gpio_write(&led_2, 1);
<> 144:ef7eb2e8f9f7 61 gpio_write(&led_3, 1);
<> 144:ef7eb2e8f9f7 62 gpio_write(&led_4, 0);
<> 144:ef7eb2e8f9f7 63 #endif
<> 144:ef7eb2e8f9f7 64
<> 144:ef7eb2e8f9f7 65 wait_ms(150);
<> 144:ef7eb2e8f9f7 66 }
<> 144:ef7eb2e8f9f7 67 }
<> 144:ef7eb2e8f9f7 68
<> 144:ef7eb2e8f9f7 69 void mbed_error_printf(const char* format, ...) {
<> 144:ef7eb2e8f9f7 70 va_list arg;
<> 144:ef7eb2e8f9f7 71 va_start(arg, format);
<> 144:ef7eb2e8f9f7 72 mbed_error_vfprintf(format, arg);
<> 144:ef7eb2e8f9f7 73 va_end(arg);
<> 144:ef7eb2e8f9f7 74 }
<> 144:ef7eb2e8f9f7 75
<> 144:ef7eb2e8f9f7 76 void mbed_error_vfprintf(const char * format, va_list arg) {
<> 144:ef7eb2e8f9f7 77 #if DEVICE_SERIAL
<> 144:ef7eb2e8f9f7 78 core_util_critical_section_enter();
<> 144:ef7eb2e8f9f7 79 char buffer[128];
<> 144:ef7eb2e8f9f7 80 int size = vsprintf(buffer, format, arg);
<> 144:ef7eb2e8f9f7 81 if (size > 0) {
<> 144:ef7eb2e8f9f7 82 if (!stdio_uart_inited) {
<> 144:ef7eb2e8f9f7 83 serial_init(&stdio_uart, STDIO_UART_TX, STDIO_UART_RX);
<> 144:ef7eb2e8f9f7 84 }
<> 144:ef7eb2e8f9f7 85 for (int i = 0; i < size; i++) {
<> 144:ef7eb2e8f9f7 86 serial_putc(&stdio_uart, buffer[i]);
<> 144:ef7eb2e8f9f7 87 }
<> 144:ef7eb2e8f9f7 88 }
<> 144:ef7eb2e8f9f7 89 core_util_critical_section_exit();
<> 144:ef7eb2e8f9f7 90 #endif
<> 144:ef7eb2e8f9f7 91 }