1 /*
2 * Copyright (c) 2015, Freescale Semiconductor, Inc.
3 * Copyright 2016-2019 NXP
4 * All rights reserved.
5 *
6 * SPDX-License-Identifier: BSD-3-Clause
7 */
8
9 #include "fsl_trgmux.h"
10
11 /* Component ID definition, used by tools. */
12 #ifndef FSL_COMPONENT_ID
13 #define FSL_COMPONENT_ID "platform.drivers.trgmux"
14 #endif
15
16 /*******************************************************************************
17 * Code
18 ******************************************************************************/
19
20 /*!
21 * brief Configures the trigger source of the appointed peripheral.
22 *
23 * The function configures the trigger source of the appointed peripheral.
24 * Example:
25 code
26 TRGMUX_SetTriggerSource(TRGMUX0, kTRGMUX_Trgmux0Dmamux0, kTRGMUX_TriggerInput0, kTRGMUX_SourcePortPin);
27 endcode
28 * param base TRGMUX peripheral base address.
29 * param index The index of the TRGMUX register, see the enum trgmux_device_t
30 * defined in \<SOC\>.h.
31 * param input The MUX select for peripheral trigger input
32 * param trigger_src The trigger inputs for various peripherals. See the enum trgmux_source_t
33 * defined in \<SOC\>.h.
34 * retval kStatus_Success Configured successfully.
35 * retval kStatus_TRGMUX_Locked Configuration failed because the register is locked.
36 */
TRGMUX_SetTriggerSource(TRGMUX_Type * base,uint32_t index,trgmux_trigger_input_t input,uint32_t trigger_src)37 status_t TRGMUX_SetTriggerSource(TRGMUX_Type *base, uint32_t index, trgmux_trigger_input_t input, uint32_t trigger_src)
38 {
39 uint32_t value;
40 status_t status;
41
42 value = base->TRGCFG[index];
43 if (0U != (value & TRGMUX_TRGCFG_LK_MASK))
44 {
45 status = kStatus_TRGMUX_Locked;
46 }
47 else
48 {
49 /* Since all SEL bitfileds in TRGCFG register have the same length, SEL0's mask is used to access other SEL
50 * bitfileds. */
51 value = (value & ~((uint32_t)TRGMUX_TRGCFG_SEL0_MASK << (uint32_t)input)) |
52 ((trigger_src & (uint32_t)TRGMUX_TRGCFG_SEL0_MASK) << (uint32_t)input);
53 base->TRGCFG[index] = value;
54
55 status = kStatus_Success;
56 }
57
58 return status;
59 }
60
