1 /******************************************************************************
2 * Copyright (c) 2022 Telink Semiconductor (Shanghai) Co., Ltd. ("TELINK")
3 * All rights reserved.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 *****************************************************************************/
18
19 /********************************************************************************************************
20 * @file timer.c
21 *
22 * @brief This is the source file for B91
23 *
24 * @author Driver Group
25 *
26 *******************************************************************************************************/
27 #include "timer.h"
28 /**********************************************************************************************************************
29 * global function implementation *
30 *********************************************************************************************************************/
31
32 /**
33 * @brief the specifed timer start working.
34 * @param[in] type - select the timer to start.
35 * @return none
36 */
timer_start(timer_type_e type)37 void timer_start(timer_type_e type)
38 {
39 switch(type)
40 {
41 case TIMER0:
42 reg_tmr_ctrl0 |= FLD_TMR0_EN;
43 break;
44 case TIMER1:
45 reg_tmr_ctrl0 |= FLD_TMR1_EN;
46 break;
47 default:
48 break;
49 }
50 }
51
52 /**
53 * @brief the specifed timer stop working.
54 * @param[in] type - select the timer to stop.
55 * @return none
56 */
timer_stop(timer_type_e type)57 void timer_stop(timer_type_e type)
58 {
59 switch(type)
60 {
61 case TIMER0:
62 reg_tmr_ctrl0 &= (~FLD_TMR0_EN);
63 break;
64 case TIMER1:
65 reg_tmr_ctrl0 &= (~FLD_TMR1_EN);
66 break;
67 default:
68 break;
69 }
70 }
71
72
73
74 /**
75 * @brief set mode, initial tick and capture of timer.
76 * @param[in] type - select the timer to start.
77 * @param[in] mode - select mode for timer.
78 * @param[in] init_tick - initial tick.
79 * @param[in] cap_tick - tick of capture.
80 * @return none
81 */
timer_set_mode(timer_type_e type,timer_mode_e mode)82 void timer_set_mode(timer_type_e type, timer_mode_e mode)
83 {
84 switch(type)
85 {
86 case TIMER0:
87 reg_tmr_sta = FLD_TMR_STA_TMR0; //clear irq status
88 reg_tmr_ctrl0 &= (~FLD_TMR0_MODE);
89 reg_tmr_ctrl0 |= mode;
90 break;
91 case TIMER1:
92 reg_tmr_sta = FLD_TMR_STA_TMR1; //clear irq status
93 reg_tmr_ctrl0 &= (~FLD_TMR1_MODE);
94 reg_tmr_ctrl0 |= (mode<<4);
95 break;
96 default:
97 break;
98 }
99
100 }
101
102 /**
103 * @brief initiate GPIO for gpio trigger and gpio width mode of timer.
104 * @param[in] type - select the timer to start.
105 * @param[in] pin - select pin for timer.
106 * @param[in] pol - select polarity for gpio trigger and gpio width
107 * @return none
108 */
timer_gpio_init(timer_type_e type,gpio_pin_e pin,gpio_pol_e pol)109 void timer_gpio_init(timer_type_e type, gpio_pin_e pin, gpio_pol_e pol )
110 {
111 gpio_function_en(pin);
112 gpio_output_dis(pin); //disable output
113 gpio_input_en(pin); //enable input
114 switch(type)
115 {
116 case TIMER0:
117 if(pol==POL_FALLING)
118 {
119 gpio_set_up_down_res(pin,GPIO_PIN_PULLUP_10K);
120 gpio_set_gpio2risc0_irq(pin,INTR_LOW_LEVEL);
121 gpio_gpio2risc0_irq_en(pin);
122 }
123 else if(pol==POL_RISING)
124 {
125 gpio_set_up_down_res(pin,GPIO_PIN_PULLDOWN_100K);
126 gpio_set_gpio2risc0_irq(pin,INTR_HIGH_LEVEL);
127 gpio_gpio2risc0_irq_en(pin);
128 }
129 break;
130
131 case TIMER1:
132 if(pol==POL_FALLING)
133 {
134 gpio_set_up_down_res(pin,GPIO_PIN_PULLUP_10K);
135 gpio_set_gpio2risc1_irq(pin,INTR_LOW_LEVEL);
136 gpio_gpio2risc1_irq_en(pin);
137 }
138 else if(pol==POL_RISING)
139 {
140 gpio_set_up_down_res(pin,GPIO_PIN_PULLDOWN_100K);
141 gpio_set_gpio2risc1_irq(pin,INTR_HIGH_LEVEL);
142 gpio_gpio2risc1_irq_en(pin);
143
144 }
145 break;
146
147 default:
148 break;
149 }
150
151 }
152
153
154
