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 mdec.h
21 *
22 * @brief This is the header file for B91
23 *
24 * @author Driver Group
25 *
26 *******************************************************************************************************/
27 #pragma once
28
29 #include "analog.h"
30 #include "reg_include/mdec_reg.h"
31
32 /**
33 * @brief This function servers to reset the MDEC module.When the system is wakeup by MDEC, you should
34 * to reset the MDEC module to clear the flag bit of MDEC wakeup.
35 * @return none.
36 */
mdec_reset(void)37 static inline void mdec_reset(void)
38 {
39 analog_write_reg8(mdec_rst_addr,analog_read_reg8(mdec_rst_addr) | FLD_MDEC_RST);
40 analog_write_reg8(mdec_rst_addr,analog_read_reg8(mdec_rst_addr) & (~FLD_MDEC_RST));
41 }
42
43 /**
44 * @brief After all packet data are received, it can check whether packet transmission is finished.
45 * @param[in] status - the interrupt status to be obtained.
46 * @return irq status.
47 */
mdec_get_irq_status(wakeup_status_e status)48 static inline unsigned char mdec_get_irq_status(wakeup_status_e status)
49 {
50 return (analog_read_reg8(reg_wakeup_status) & status);
51 }
52
53 /**
54 * @brief This function serves to clear the wake mdec bit.After all packet
55 * data are received, corresponding flag bit will be set as 1.
56 * needed to manually clear this flag bit so as to avoid misjudgment.
57 * @param[in] status - the interrupt status that needs to be cleared.
58 * @return none.
59 */
mdec_clr_irq_status(wakeup_status_e status)60 static inline void mdec_clr_irq_status(wakeup_status_e status)
61 {
62 analog_write_reg8(reg_wakeup_status, (analog_read_reg8(reg_wakeup_status) | status));
63 }
64
65 /**
66 * @brief This function is used to initialize the MDEC module,include clock setting and input IO select.
67 * @param[in] pin - mdec pin.
68 * In order to distinguish which pin the data is input from,only one input pin can be selected one time.
69 * @return none.
70 */
71 void mdec_init(mdec_pin_e pin);
72
73 /**
74 * @brief This function is used to read the receive data of MDEC module's IO.
75 * @param[out] dat - The array to store date.
76 * @return 1 decode success, 0 decode failure.
77 */
78 unsigned char mdec_read_dat(unsigned char *dat);
79
80
81
82
