takashi kadono / Mbed OS Nucleo446_SSD1331

Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466

Dependencies:   ssd1331

mbed-os/targets/TARGET_Atmel/TARGET_SAM_CortexM4/lp_ticker.c@3:f3764f852aa8, 2018-10-11 (annotated)

Committer:
kadonotakashi
Date:
Thu Oct 11 02:27:46 2018 +0000
Revision:
3:f3764f852aa8
Parent:
0:8fdf9a60065b 
Nucreo 446 + SSD1331 test version;

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
kadonotakashi 0:8fdf9a60065b 17 #include "cmsis.h"
kadonotakashi 0:8fdf9a60065b 18 #include <stddef.h>
kadonotakashi 0:8fdf9a60065b 19 #include "lp_ticker_api.h"
kadonotakashi 0:8fdf9a60065b 20 #include "mbed_assert.h"
kadonotakashi 0:8fdf9a60065b 21 #include "sleep_api.h"
kadonotakashi 0:8fdf9a60065b 22 #include "compiler.h"
kadonotakashi 0:8fdf9a60065b 23 #include "sysclk.h"
kadonotakashi 0:8fdf9a60065b 24 #include "tc.h"
kadonotakashi 0:8fdf9a60065b 25 #include "us_ticker_api.h"
kadonotakashi 0:8fdf9a60065b 26
kadonotakashi 0:8fdf9a60065b 27 uint8_t lp_ticker_inited = 0;
kadonotakashi 0:8fdf9a60065b 28 extern volatile uint8_t us_ticker_inited;
kadonotakashi 0:8fdf9a60065b 29 extern uint8_t g_sys_init;
kadonotakashi 0:8fdf9a60065b 30 extern volatile uint32_t overflow32bitcounter;
kadonotakashi 0:8fdf9a60065b 31 volatile uint16_t lp_ticker_16bit_counter;
kadonotakashi 0:8fdf9a60065b 32 volatile uint16_t lp_ticker_interrupt_counter;
kadonotakashi 0:8fdf9a60065b 33 volatile uint16_t lp_ticker_interrupt_offset;
kadonotakashi 0:8fdf9a60065b 34 volatile uint32_t lpoverflow32bitcounter = 0;
kadonotakashi 0:8fdf9a60065b 35
kadonotakashi 0:8fdf9a60065b 36 #define TICKER_COUNTER_lp TC0
kadonotakashi 0:8fdf9a60065b 37
kadonotakashi 0:8fdf9a60065b 38 #define TICKER_COUNTER_CLK2 ID_TC2
kadonotakashi 0:8fdf9a60065b 39
kadonotakashi 0:8fdf9a60065b 40 #define TICKER_COUNTER_CHANNEL2 2
kadonotakashi 0:8fdf9a60065b 41 #define TICKER_COUNTER_IRQn2 TC2_IRQn
kadonotakashi 0:8fdf9a60065b 42 #define TICKER_COUNTER_Handlr2 TC2_Handler
kadonotakashi 0:8fdf9a60065b 43
kadonotakashi 0:8fdf9a60065b 44 #define OVERFLOW_16bit_VALUE 0xFFFF
kadonotakashi 0:8fdf9a60065b 45
kadonotakashi 0:8fdf9a60065b 46
kadonotakashi 0:8fdf9a60065b 47 void TICKER_COUNTER_Handlr2(void)
kadonotakashi 0:8fdf9a60065b 48 {
kadonotakashi 0:8fdf9a60065b 49 uint32_t status=tc_get_status(TICKER_COUNTER_lp, TICKER_COUNTER_CHANNEL2);
kadonotakashi 0:8fdf9a60065b 50 uint32_t interrupmask=tc_get_interrupt_mask(TICKER_COUNTER_lp, TICKER_COUNTER_CHANNEL2);
kadonotakashi 0:8fdf9a60065b 51
kadonotakashi 0:8fdf9a60065b 52 if (((status & interrupmask) & TC_IER_CPCS)) {
kadonotakashi 0:8fdf9a60065b 53 if(lp_ticker_interrupt_counter) {
kadonotakashi 0:8fdf9a60065b 54 lp_ticker_interrupt_counter--;
kadonotakashi 0:8fdf9a60065b 55 } else {
kadonotakashi 0:8fdf9a60065b 56 if(lp_ticker_interrupt_offset) {
kadonotakashi 0:8fdf9a60065b 57 tc_stop(TICKER_COUNTER_lp, TICKER_COUNTER_CHANNEL2);
kadonotakashi 0:8fdf9a60065b 58 tc_write_rc(TICKER_COUNTER_lp, TICKER_COUNTER_CHANNEL2, (uint32_t)lp_ticker_interrupt_offset);
kadonotakashi 0:8fdf9a60065b 59 tc_start(TICKER_COUNTER_lp, TICKER_COUNTER_CHANNEL2);
kadonotakashi 0:8fdf9a60065b 60 lp_ticker_interrupt_offset=0;
kadonotakashi 0:8fdf9a60065b 61 } else {
kadonotakashi 0:8fdf9a60065b 62 lp_ticker_irq_handler();
kadonotakashi 0:8fdf9a60065b 63 }
kadonotakashi 0:8fdf9a60065b 64 }
kadonotakashi 0:8fdf9a60065b 65 }
kadonotakashi 0:8fdf9a60065b 66 }
kadonotakashi 0:8fdf9a60065b 67
kadonotakashi 0:8fdf9a60065b 68 void lp_ticker_init(void)
kadonotakashi 0:8fdf9a60065b 69 {
kadonotakashi 0:8fdf9a60065b 70 if(lp_ticker_inited)
kadonotakashi 0:8fdf9a60065b 71 return;
kadonotakashi 0:8fdf9a60065b 72 if (!us_ticker_inited)
kadonotakashi 0:8fdf9a60065b 73 us_ticker_init();
kadonotakashi 0:8fdf9a60065b 74 sysclk_enable_peripheral_clock(TICKER_COUNTER_CLK2);
kadonotakashi 0:8fdf9a60065b 75 tc_init(TICKER_COUNTER_lp, TICKER_COUNTER_CHANNEL2, TC_CMR_TCCLKS_TIMER_CLOCK4);
kadonotakashi 0:8fdf9a60065b 76 lp_ticker_inited = 1;
kadonotakashi 0:8fdf9a60065b 77 }
kadonotakashi 0:8fdf9a60065b 78
kadonotakashi 0:8fdf9a60065b 79 uint32_t lp_ticker_read()
kadonotakashi 0:8fdf9a60065b 80 {
kadonotakashi 0:8fdf9a60065b 81 if (!lp_ticker_inited)
kadonotakashi 0:8fdf9a60065b 82 lp_ticker_init();
kadonotakashi 0:8fdf9a60065b 83 return us_ticker_read();
kadonotakashi 0:8fdf9a60065b 84 }
kadonotakashi 0:8fdf9a60065b 85
kadonotakashi 0:8fdf9a60065b 86 void lp_ticker_set_interrupt(timestamp_t timestamp)
kadonotakashi 0:8fdf9a60065b 87 {
kadonotakashi 0:8fdf9a60065b 88 uint32_t cur_time;
kadonotakashi 0:8fdf9a60065b 89 uint32_t delta;
kadonotakashi 0:8fdf9a60065b 90
kadonotakashi 0:8fdf9a60065b 91 cur_time = lp_ticker_read();
kadonotakashi 0:8fdf9a60065b 92 delta = timestamp - cur_time;
kadonotakashi 0:8fdf9a60065b 93
kadonotakashi 0:8fdf9a60065b 94 uint16_t interruptat=0;
kadonotakashi 0:8fdf9a60065b 95
kadonotakashi 0:8fdf9a60065b 96 if(delta > OVERFLOW_16bit_VALUE) {
kadonotakashi 0:8fdf9a60065b 97 lp_ticker_interrupt_counter= (delta/OVERFLOW_16bit_VALUE) -1;
kadonotakashi 0:8fdf9a60065b 98 lp_ticker_interrupt_offset=delta%OVERFLOW_16bit_VALUE;
kadonotakashi 0:8fdf9a60065b 99 interruptat=OVERFLOW_16bit_VALUE;
kadonotakashi 0:8fdf9a60065b 100 } else {
kadonotakashi 0:8fdf9a60065b 101 lp_ticker_interrupt_counter=0;
kadonotakashi 0:8fdf9a60065b 102 lp_ticker_interrupt_offset=0;
kadonotakashi 0:8fdf9a60065b 103 interruptat=delta;
kadonotakashi 0:8fdf9a60065b 104 }
kadonotakashi 0:8fdf9a60065b 105
kadonotakashi 0:8fdf9a60065b 106 NVIC_DisableIRQ(TICKER_COUNTER_IRQn2);
kadonotakashi 0:8fdf9a60065b 107
kadonotakashi 0:8fdf9a60065b 108 tc_write_rc(TICKER_COUNTER_lp, TICKER_COUNTER_CHANNEL2, (uint32_t)interruptat);
kadonotakashi 0:8fdf9a60065b 109
kadonotakashi 0:8fdf9a60065b 110 NVIC_ClearPendingIRQ(TICKER_COUNTER_IRQn2);
kadonotakashi 0:8fdf9a60065b 111 NVIC_SetPriority(TICKER_COUNTER_IRQn2, 0);
kadonotakashi 0:8fdf9a60065b 112 NVIC_EnableIRQ(TICKER_COUNTER_IRQn2);
kadonotakashi 0:8fdf9a60065b 113 tc_enable_interrupt(TICKER_COUNTER_lp, TICKER_COUNTER_CHANNEL2, TC_IDR_CPCS );
kadonotakashi 0:8fdf9a60065b 114
kadonotakashi 0:8fdf9a60065b 115 tc_start(TICKER_COUNTER_lp, TICKER_COUNTER_CHANNEL2);
kadonotakashi 0:8fdf9a60065b 116 }
kadonotakashi 0:8fdf9a60065b 117
kadonotakashi 0:8fdf9a60065b 118 void lp_ticker_fire_interrupt(void)
kadonotakashi 0:8fdf9a60065b 119 {
kadonotakashi 0:8fdf9a60065b 120 NVIC_SetPendingIRQ(TICKER_COUNTER_IRQn2);
kadonotakashi 0:8fdf9a60065b 121 }
kadonotakashi 0:8fdf9a60065b 122
kadonotakashi 0:8fdf9a60065b 123 void lp_ticker_disable_interrupt(void)
kadonotakashi 0:8fdf9a60065b 124 {
kadonotakashi 0:8fdf9a60065b 125 tc_stop(TICKER_COUNTER_lp, TICKER_COUNTER_CHANNEL2);
kadonotakashi 0:8fdf9a60065b 126 tc_disable_interrupt(TICKER_COUNTER_lp, TICKER_COUNTER_CHANNEL2, TC_IDR_CPCS);
kadonotakashi 0:8fdf9a60065b 127 NVIC_DisableIRQ(TICKER_COUNTER_IRQn2);
kadonotakashi 0:8fdf9a60065b 128 }
kadonotakashi 0:8fdf9a60065b 129
kadonotakashi 0:8fdf9a60065b 130 void lp_ticker_clear_interrupt(void)
kadonotakashi 0:8fdf9a60065b 131 {
kadonotakashi 0:8fdf9a60065b 132 NVIC_ClearPendingIRQ(TICKER_COUNTER_IRQn2);
kadonotakashi 0:8fdf9a60065b 133 }
kadonotakashi 0:8fdf9a60065b 134
kadonotakashi 0:8fdf9a60065b 135 void lp_ticker_free(void)
kadonotakashi 0:8fdf9a60065b 136 {
kadonotakashi 0:8fdf9a60065b 137
kadonotakashi 0:8fdf9a60065b 138 }