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Remove unused ITM implementation from NRF51 series 

NRF51 doesn't support SWO out.
pull/6959/head
Marcus Chang 2018-05-18 11:26:13 -07:00
parent 79640c6a88
commit d27c4c920c
1 changed files with 0 additions and 44 deletions
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44
targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF51/itm_api.c
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/* mbed Microcontroller Library
* Copyright (c) 2017 ARM Limited
*
* 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.
*/
#if defined(DEVICE_ITM)
#include "hal/itm_api.h"
#include "nrf.h"
#include "nrf5x_lf_clk_helper.h"
/* SWO frequency: 4000 kHz */
void itm_init(void)
{
/* Enable SWO trace functionality */
CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
NRF_CLOCK->TRACECONFIG |= CLOCK_TRACECONFIG_TRACEMUX_Serial << CLOCK_TRACECONFIG_TRACEMUX_Pos;
/* set SWO clock speed to 4 MHz */
NRF_CLOCK->TRACECONFIG = (NRF_CLOCK->TRACECONFIG & ~CLOCK_TRACECONFIG_TRACEPORTSPEED_Msk) |
(CLOCK_TRACECONFIG_TRACEPORTSPEED_4MHz << CLOCK_TRACECONFIG_TRACEPORTSPEED_Pos);
/* set SWO pin */
NRF_P0->PIN_CNF[18] = (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos) |
(GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
(GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
/* set prescaler */
TPI->ACPR = 0;
}
#endif