1 /******************************************************************************
2 * @file vio_memory.c
3 * @brief Virtual I/O implementation using memory only
4 * @version V1.0.0
5 * @date 24. May 2023
6 ******************************************************************************/
7 /*
8 * Copyright (c) 2019-2023 Arm Limited. All rights reserved.
9 *
10 * SPDX-License-Identifier: Apache-2.0
11 *
12 * Licensed under the Apache License, Version 2.0 (the License); you may
13 * not use this file except in compliance with the License.
14 * You may obtain a copy of the License at
15 *
16 * www.apache.org/licenses/LICENSE-2.0
17 *
18 * Unless required by applicable law or agreed to in writing, software
19 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
20 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
21 * See the License for the specific language governing permissions and
22 * limitations under the License.
23 */
24
25 #include <string.h>
26 #include "cmsis_vio.h"
27
28 #include "RTE_Components.h" // Component selection
29 #include CMSIS_device_header
30
31 // VIO input, output definitions
32 #ifndef VIO_VALUE_NUM
33 #define VIO_VALUE_NUM 5U // Number of values
34 #endif
35
36 // VIO input, output variables
37 __USED uint32_t vioSignalIn; // Memory for incoming signal
38 __USED uint32_t vioSignalOut; // Memory for outgoing signal
39 __USED int32_t vioValue[VIO_VALUE_NUM]; // Memory for value used in vioGetValue/vioSetValue
40
41 // Initialize test input, output.
vioInit(void)42 void vioInit (void) {
43
44 vioSignalIn = 0U;
45 vioSignalOut = 0U;
46
47 memset(vioValue, 0, sizeof(vioValue));
48 }
49
50 // Set signal output.
vioSetSignal(uint32_t mask,uint32_t signal)51 void vioSetSignal (uint32_t mask, uint32_t signal) {
52
53 vioSignalOut &= ~mask;
54 vioSignalOut |= mask & signal;
55 }
56
57 // Get signal input.
vioGetSignal(uint32_t mask)58 uint32_t vioGetSignal (uint32_t mask) {
59 uint32_t signal;
60
61 signal = vioSignalIn & mask;
62
63 return signal;
64 }
65
66 // Set value output.
vioSetValue(uint32_t id,int32_t value)67 void vioSetValue (uint32_t id, int32_t value) {
68 uint32_t index = id;
69
70 if (index >= VIO_VALUE_NUM) {
71 return; /* return in case of out-of-range index */
72 }
73
74 vioValue[index] = value;
75 }
76
77 // Get value input.
vioGetValue(uint32_t id)78 int32_t vioGetValue (uint32_t id) {
79 uint32_t index = id;
80 int32_t value = 0;
81
82 if (index >= VIO_VALUE_NUM) {
83 return value; /* return default in case of out-of-range index */
84 }
85
86 value = vioValue[index];
87
88 return value;
89 }
90
