uv-k5-firmware/dtmf.c
2023-08-23 00:37:35 +01:00

79 lines
1.7 KiB
C

/* Copyright 2023 Dual Tachyon
* https://github.com/DualTachyon
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <ctype.h>
#include <string.h>
#include "driver/eeprom.h"
#include "dtmf.h"
char gDTMF_String[15];
bool DTMF_ValidateCodes(char *pCode, uint8_t Size)
{
uint8_t i;
if (pCode[0] == 0xFF || pCode[0] == 0) {
return false;
}
for (i = 0; i < Size; i++) {
if (pCode[i] == 0xFF || pCode[i] == 0) {
pCode[i] = 0;
break;
}
if (!isdigit((int)pCode[i]) && (pCode[i] < 'A' || pCode[i] > 'D') && pCode[i] != '*' && pCode[i] != '#') {
return false;
}
}
return true;
}
bool DTMF_GetContact(uint8_t Index, char *pContact)
{
EEPROM_ReadBuffer(0x1C00 + (Index * 0x10), pContact, 16);
if ((pContact[0] - ' ') >= 0x5F) {
return false;
}
return true;
}
bool DTMF_FindContact(const char *pContact, char *pResult)
{
char Contact [16];
uint8_t i, j;
for (i = 0; i < 16; i++) {
if (!DTMF_GetContact(i, Contact)) {
return false;
}
for (j = 0; j < 3; j++) {
if (pContact[j] != Contact[j + 8]) {
break;
}
}
if (j == 3) {
memcpy(pResult, Contact, 8);
pResult[8] = 0;
return true;
}
}
return false;
}