1 /**************************************************************************//**
2 * @file acmp.c
3 * @version V3.00
4 * @brief Analog Comparator(ACMP) driver source file
5 *
6 * @copyright SPDX-License-Identifier: Apache-2.0
7 * @copyright Copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
8 *****************************************************************************/
9
10 #include "NuMicro.h"
11
12 #ifdef __cplusplus
13 extern "C"
14 {
15 #endif
16
17 /** @addtogroup Standard_Driver Standard Driver
18 @{
19 */
20
21 /** @addtogroup ACMP_Driver ACMP Driver
22 @{
23 */
24
25
26 /** @addtogroup ACMP_EXPORTED_FUNCTIONS ACMP Exported Functions
27 @{
28 */
29
30
31 /**
32 * @brief Configure the specified ACMP module
33 *
34 * @param[in] acmp The pointer of the specified ACMP module
35 * @param[in] u32ChNum Comparator number.
36 * @param[in] u32NegSrc Comparator negative input selection. Including:
37 * - \ref ACMP_CTL_NEGSEL_PIN
38 * - \ref ACMP_CTL_NEGSEL_CRV
39 * - \ref ACMP_CTL_NEGSEL_VBG
40 * - \ref ACMP_CTL_NEGSEL_DAC
41 * @param[in] u32HysSel The hysteresis function option. Including:
42 * - \ref ACMP_CTL_HYSTERESIS_30MV
43 * - \ref ACMP_CTL_HYSTERESIS_20MV
44 * - \ref ACMP_CTL_HYSTERESIS_10MV
45 * - \ref ACMP_CTL_HYSTERESIS_DISABLE
46 *
47 * @return None
48 *
49 * @details Configure hysteresis function, select the source of negative input and enable analog comparator.
50 */
ACMP_Open(ACMP_T * acmp,uint32_t u32ChNum,uint32_t u32NegSrc,uint32_t u32HysSel)51 void ACMP_Open(ACMP_T *acmp, uint32_t u32ChNum, uint32_t u32NegSrc, uint32_t u32HysSel)
52 {
53 acmp->CTL[u32ChNum] = (acmp->CTL[u32ChNum] & (~(ACMP_CTL_NEGSEL_Msk | ACMP_CTL_HYSSEL_Msk))) | (u32NegSrc | u32HysSel | ACMP_CTL_ACMPEN_Msk);
54 }
55
56 /**
57 * @brief Close analog comparator
58 *
59 * @param[in] acmp The pointer of the specified ACMP module
60 * @param[in] u32ChNum Comparator number.
61 *
62 * @return None
63 *
64 * @details This function will clear ACMPEN bit of ACMP_CTL register to disable analog comparator.
65 */
ACMP_Close(ACMP_T * acmp,uint32_t u32ChNum)66 void ACMP_Close(ACMP_T *acmp, uint32_t u32ChNum)
67 {
68 acmp->CTL[u32ChNum] &= (~ACMP_CTL_ACMPEN_Msk);
69 }
70
71
72
73 /**@}*/ /* end of group ACMP_EXPORTED_FUNCTIONS */
74
75 /**@}*/ /* end of group ACMP_Driver */
76
77 /**@}*/ /* end of group Standard_Driver */
78
79 #ifdef __cplusplus
80 }
81 #endif
82
