takashi kadono / Mbed OS Nucleo446_SSD1331

Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466

Dependencies:   ssd1331

mbed-os/targets/TARGET_ARM_SSG/TARGET_IOTSS/us_ticker.c@0:8fdf9a60065b, 2018-10-10 (annotated)

Committer:
kadonotakashi
Date:
Wed Oct 10 00:33:53 2018 +0000
Revision:
0:8fdf9a60065b
how to make mbed librry

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kadonotakashi 0:8fdf9a60065b 1 /* mbed Microcontroller Library
kadonotakashi 0:8fdf9a60065b 2 * Copyright (c) 2006-2015 ARM Limited
kadonotakashi 0:8fdf9a60065b 3 *
kadonotakashi 0:8fdf9a60065b 4 * Licensed under the Apache License, Version 2.0 (the "License");
kadonotakashi 0:8fdf9a60065b 5 * you may not use this file except in compliance with the License.
kadonotakashi 0:8fdf9a60065b 6 * You may obtain a copy of the License at
kadonotakashi 0:8fdf9a60065b 7 *
kadonotakashi 0:8fdf9a60065b 8 * http://www.apache.org/licenses/LICENSE-2.0
kadonotakashi 0:8fdf9a60065b 9 *
kadonotakashi 0:8fdf9a60065b 10 * Unless required by applicable law or agreed to in writing, software
kadonotakashi 0:8fdf9a60065b 11 * distributed under the License is distributed on an "AS IS" BASIS,
kadonotakashi 0:8fdf9a60065b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kadonotakashi 0:8fdf9a60065b 13 * See the License for the specific language governing permissions and
kadonotakashi 0:8fdf9a60065b 14 * limitations under the License.
kadonotakashi 0:8fdf9a60065b 15 */
kadonotakashi 0:8fdf9a60065b 16 #include <stddef.h>
kadonotakashi 0:8fdf9a60065b 17 #include "us_ticker_api.h"
kadonotakashi 0:8fdf9a60065b 18 #include "PeripheralNames.h"
kadonotakashi 0:8fdf9a60065b 19
kadonotakashi 0:8fdf9a60065b 20 #define US_TICKER_TIMER1 CMSDK_DUALTIMER1
kadonotakashi 0:8fdf9a60065b 21 #define US_TICKER_TIMER2 CMSDK_DUALTIMER2
kadonotakashi 0:8fdf9a60065b 22 #define US_TICKER_TIMER_IRQn DUALTIMER_IRQn
kadonotakashi 0:8fdf9a60065b 23
kadonotakashi 0:8fdf9a60065b 24 int us_ticker_inited = 0;
kadonotakashi 0:8fdf9a60065b 25
kadonotakashi 0:8fdf9a60065b 26 void us_ticker_init(void) {
kadonotakashi 0:8fdf9a60065b 27 if (us_ticker_inited) return;
kadonotakashi 0:8fdf9a60065b 28 us_ticker_inited = 1;
kadonotakashi 0:8fdf9a60065b 29
kadonotakashi 0:8fdf9a60065b 30 US_TICKER_TIMER1->TimerControl = 0x0; // disable timer
kadonotakashi 0:8fdf9a60065b 31 US_TICKER_TIMER2->TimerControl = 0x00; // disable timer
kadonotakashi 0:8fdf9a60065b 32 US_TICKER_TIMER1->TimerLoad = 0xFFFFFFFF;
kadonotakashi 0:8fdf9a60065b 33 US_TICKER_TIMER2->TimerLoad = 0xFFFFFFFF;
kadonotakashi 0:8fdf9a60065b 34
kadonotakashi 0:8fdf9a60065b 35 US_TICKER_TIMER1->TimerControl = 0x62; // enable interrupt and set to 32 bit counter and set to periodic mode
kadonotakashi 0:8fdf9a60065b 36 US_TICKER_TIMER2->TimerControl = 0x42; // enable interrupt and set to 32 bit counter
kadonotakashi 0:8fdf9a60065b 37
kadonotakashi 0:8fdf9a60065b 38 US_TICKER_TIMER1->TimerControl |= 0x80; // enable counter
kadonotakashi 0:8fdf9a60065b 39 US_TICKER_TIMER2->TimerControl |= 0x80; // enable counter
kadonotakashi 0:8fdf9a60065b 40
kadonotakashi 0:8fdf9a60065b 41 NVIC_SetVector(US_TICKER_TIMER_IRQn, (uint32_t)us_ticker_irq_handler);
kadonotakashi 0:8fdf9a60065b 42 NVIC_EnableIRQ(US_TICKER_TIMER_IRQn);
kadonotakashi 0:8fdf9a60065b 43 }
kadonotakashi 0:8fdf9a60065b 44
kadonotakashi 0:8fdf9a60065b 45 uint32_t us_ticker_read() {
kadonotakashi 0:8fdf9a60065b 46 uint32_t return_value = 0;
kadonotakashi 0:8fdf9a60065b 47
kadonotakashi 0:8fdf9a60065b 48 if (!us_ticker_inited)
kadonotakashi 0:8fdf9a60065b 49 us_ticker_init();
kadonotakashi 0:8fdf9a60065b 50 return_value = ((~US_TICKER_TIMER2->TimerValue)/24);
kadonotakashi 0:8fdf9a60065b 51 return return_value;
kadonotakashi 0:8fdf9a60065b 52 }
kadonotakashi 0:8fdf9a60065b 53
kadonotakashi 0:8fdf9a60065b 54 void us_ticker_set_interrupt(timestamp_t timestamp) {
kadonotakashi 0:8fdf9a60065b 55 int delta = 0;
kadonotakashi 0:8fdf9a60065b 56
kadonotakashi 0:8fdf9a60065b 57 if (!us_ticker_inited)
kadonotakashi 0:8fdf9a60065b 58 us_ticker_init();
kadonotakashi 0:8fdf9a60065b 59 delta = (int)(timestamp - us_ticker_read());
kadonotakashi 0:8fdf9a60065b 60 if (delta <= 0) {
kadonotakashi 0:8fdf9a60065b 61 // This event was in the past:
kadonotakashi 0:8fdf9a60065b 62 us_ticker_irq_handler();
kadonotakashi 0:8fdf9a60065b 63 return;
kadonotakashi 0:8fdf9a60065b 64 }
kadonotakashi 0:8fdf9a60065b 65 // enable interrupt
kadonotakashi 0:8fdf9a60065b 66 US_TICKER_TIMER1->TimerControl = 0x0; // disable timer
kadonotakashi 0:8fdf9a60065b 67 US_TICKER_TIMER1->TimerControl = 0x62; // enable interrupt and set to 32 bit counter and set to periodic mode
kadonotakashi 0:8fdf9a60065b 68 US_TICKER_TIMER1->TimerLoad = (delta)*24; //initialise the timer value
kadonotakashi 0:8fdf9a60065b 69 US_TICKER_TIMER1->TimerControl |= 0x80; //enable timer
kadonotakashi 0:8fdf9a60065b 70 }
kadonotakashi 0:8fdf9a60065b 71
kadonotakashi 0:8fdf9a60065b 72 void us_ticker_fire_interrupt(void)
kadonotakashi 0:8fdf9a60065b 73 {
kadonotakashi 0:8fdf9a60065b 74 NVIC_SetPendingIRQ(US_TICKER_TIMER_IRQn);
kadonotakashi 0:8fdf9a60065b 75 }
kadonotakashi 0:8fdf9a60065b 76
kadonotakashi 0:8fdf9a60065b 77 void us_ticker_disable_interrupt(void) {
kadonotakashi 0:8fdf9a60065b 78
kadonotakashi 0:8fdf9a60065b 79 US_TICKER_TIMER1->TimerControl &= 0xDF;
kadonotakashi 0:8fdf9a60065b 80 US_TICKER_TIMER2->TimerControl &= 0xDF;
kadonotakashi 0:8fdf9a60065b 81
kadonotakashi 0:8fdf9a60065b 82 }
kadonotakashi 0:8fdf9a60065b 83
kadonotakashi 0:8fdf9a60065b 84 void us_ticker_clear_interrupt(void) {
kadonotakashi 0:8fdf9a60065b 85
kadonotakashi 0:8fdf9a60065b 86 US_TICKER_TIMER1->TimerIntClr = 0x1;
kadonotakashi 0:8fdf9a60065b 87 US_TICKER_TIMER2->TimerIntClr = 0x1;
kadonotakashi 0:8fdf9a60065b 88
kadonotakashi 0:8fdf9a60065b 89 }
kadonotakashi 0:8fdf9a60065b 90
kadonotakashi 0:8fdf9a60065b 91 void us_ticker_free(void)
kadonotakashi 0:8fdf9a60065b 92 {
kadonotakashi 0:8fdf9a60065b 93
kadonotakashi 0:8fdf9a60065b 94 }