1 /******************************************************************************
2  *
3  * Copyright (C) 2022-2023 Maxim Integrated Products, Inc. (now owned by
4  * Analog Devices, Inc.),
5  * Copyright (C) 2023-2024 Analog Devices, Inc.
6  *
7  * Licensed under the Apache License, Version 2.0 (the "License");
8  * you may not use this file except in compliance with the License.
9  * You may obtain a copy of the License at
10  *
11  *     http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing, software
14  * distributed under the License is distributed on an "AS IS" BASIS,
15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16  * See the License for the specific language governing permissions and
17  * limitations under the License.
18  *
19  ******************************************************************************/
20 
21 #ifndef LIBRARIES_CMSIS_DEVICE_MAXIM_MAX78000_INCLUDE_SYSTEM_MAX78000_H_
22 #define LIBRARIES_CMSIS_DEVICE_MAXIM_MAX78000_INCLUDE_SYSTEM_MAX78000_H_
23 
24 #ifdef __cplusplus
25 extern "C" {
26 #endif
27 
28 #include <stdint.h>
29 
30 /*----------------------------------------------------------------------------
31   Define clocks
32  *----------------------------------------------------------------------------*/
33 
34 /* NOTE: HIRC was previously named CRYPTO */
35 #ifdef CRYPTO_FREQ
36 #warning WARNING: CRYPTO_FREQ does not exist in MAX78000, replace with HIRC_FREQ!
37 #define HIRC_FREQ CRYPTO_FREQ
38 #endif
39 
40 /* NOTE: EXTCLK needs to be defined by user based on the clock they supply */
41 #ifndef EXTCLK_FREQ
42 #define EXTCLK_FREQ 75000000
43 #endif
44 
45 /* NOTE: This is the nominal value for INRO. The actual value may vary from chip to chip.
46          Update if use of this oscillator requires precise timing.
47 		 This is default device setting. Update this if user changes to other
48 		 available value.*/
49 /* NOTE: INRO was previously named NANORING */
50 #ifndef INRO_FREQ
51 #define INRO_FREQ 30000
52 #endif
53 
54 #ifndef IPO_FREQ
55 #define IPO_FREQ 100000000
56 #endif
57 
58 #ifndef ISO_FREQ
59 #define ISO_FREQ 60000000
60 #endif
61 
62 #ifndef IBRO_FREQ
63 #define IBRO_FREQ 7372800
64 #endif
65 
66 #ifndef ERTCO_FREQ
67 #define ERTCO_FREQ 32768
68 #endif
69 
70 #ifndef HIRC_FREQ
71 #define HIRC_FREQ IPO_FREQ
72 #endif
73 
74 extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock)  */
75 #ifdef PeripheralClock
76 #warning PeripheralClock define is being overidden.
77 #else
78 #define PeripheralClock (SystemCoreClock / 2) /*!< Peripheral Clock Frequency */
79 #endif
80 
81 /*
82  * Initialize the system
83  *
84  * @brief  Setup the microcontroller system.
85  *         Initialize the System and update the SystemCoreClock variable.
86  */
87 void SystemInit(void);
88 
89 /*
90  * Update SystemCoreClock variable
91  *
92  * @brief  Updates the SystemCoreClock with current core Clock
93  *         retrieved from CPU registers.
94  */
95 void SystemCoreClockUpdate(void);
96 
97 #ifdef __cplusplus
98 }
99 #endif
100 
101 #endif // LIBRARIES_CMSIS_DEVICE_MAXIM_MAX78000_INCLUDE_SYSTEM_MAX78000_H_
102