mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
// Copyright 2015-2019 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 "soc/uart_periph.h"
|
|
#include "soc/gpio_periph.h"
|
|
#include "esp_gdbstub_common.h"
|
|
#include "sdkconfig.h"
|
|
|
|
#define UART_NUM CONFIG_ESP_CONSOLE_UART_NUM
|
|
|
|
void esp_gdbstub_target_init()
|
|
{
|
|
}
|
|
|
|
int esp_gdbstub_getchar()
|
|
{
|
|
while (REG_GET_FIELD(UART_STATUS_REG(UART_NUM), UART_RXFIFO_CNT) == 0) {
|
|
;
|
|
}
|
|
return REG_READ(UART_FIFO_AHB_REG(UART_NUM));
|
|
}
|
|
|
|
void esp_gdbstub_putchar(int c)
|
|
{
|
|
while (REG_GET_FIELD(UART_STATUS_REG(UART_NUM), UART_TXFIFO_CNT) >= 126) {
|
|
;
|
|
}
|
|
REG_WRITE(UART_FIFO_AHB_REG(UART_NUM), c);
|
|
}
|
|
|
|
int esp_gdbstub_readmem(intptr_t addr)
|
|
{
|
|
if (addr < 0x20000000 || addr >= 0x80000000) {
|
|
/* see cpu_configure_region_protection */
|
|
return -1;
|
|
}
|
|
uint32_t val_aligned = *(uint32_t *)(addr & (~3));
|
|
uint32_t shift = (addr & 3) * 8;
|
|
return (val_aligned >> shift) & 0xff;
|
|
}
|