esp-idf/components/esp_rom/patches/esp_rom_sys.c

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C
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// Copyright 2010-2020 Espressif Systems (Shanghai) PTE LTD
//
// 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 <stdint.h>
#include "esp_attr.h"
IRAM_ATTR void esp_rom_install_channel_putc(int channel, void (*putc)(char c))
{
extern void ets_install_putc1(void (*p)(char c));
extern void ets_install_putc2(void (*p)(char c));
switch (channel) {
case 1:
ets_install_putc1(putc);
break;
case 2:
ets_install_putc2(putc);
break;
default:
break;
}
}