esp-idf/components/xtensa/eri.c

32 lines
920 B
C
Raw Normal View History

2016-10-21 06:01:08 -04:00
// Copyright 2015-2016 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.
2016-10-17 00:18:17 -04:00
#include <stdint.h>
#include "eri.h"
uint32_t eri_read(int addr) {
uint32_t ret;
asm volatile (
2016-10-17 00:18:17 -04:00
"RER %0,%1"
:"=r"(ret):"r"(addr)
);
return ret;
}
void eri_write(int addr, uint32_t data) {
asm volatile (
"WER %0,%1"
::"r"(data),"r"(addr)
);
}