mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
129 lines
3.1 KiB
C
129 lines
3.1 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"
|
||
|
#include "hal/uart_ll.h"
|
||
|
|
||
|
#define UART_NUM CONFIG_ESP_CONSOLE_UART_NUM
|
||
|
|
||
|
static uart_dev_t *gdb_uart = NULL;
|
||
|
|
||
|
|
||
|
void esp_gdbstub_target_init(void)
|
||
|
{
|
||
|
switch (UART_NUM) {
|
||
|
case 0:
|
||
|
gdb_uart = &UART0;
|
||
|
break;
|
||
|
case 1:
|
||
|
gdb_uart = &UART1;
|
||
|
break;
|
||
|
case 2:
|
||
|
gdb_uart = &UART2;
|
||
|
break;
|
||
|
default:
|
||
|
gdb_uart = &UART0;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
int esp_gdbstub_getchar(void)
|
||
|
{
|
||
|
if (gdb_uart == NULL) {
|
||
|
esp_gdbstub_target_init();
|
||
|
}
|
||
|
unsigned char data;
|
||
|
while (uart_ll_get_rxfifo_len(gdb_uart) == 0) {
|
||
|
|
||
|
}
|
||
|
uart_ll_read_rxfifo(gdb_uart, &data, 1);
|
||
|
return data;
|
||
|
}
|
||
|
|
||
|
void esp_gdbstub_putchar(int c)
|
||
|
{
|
||
|
if (gdb_uart == NULL) {
|
||
|
esp_gdbstub_target_init();
|
||
|
}
|
||
|
while (uart_ll_get_txfifo_len(gdb_uart) <= 126) {
|
||
|
}
|
||
|
uart_ll_write_txfifo(gdb_uart, (uint8_t *)&c, 1);
|
||
|
}
|
||
|
|
||
|
void esp_gdbstub_flush()
|
||
|
{
|
||
|
//not needed for uart
|
||
|
}
|
||
|
|
||
|
int esp_gdbstub_getfifo()
|
||
|
{
|
||
|
if (gdb_uart == NULL) {
|
||
|
esp_gdbstub_target_init();
|
||
|
}
|
||
|
int doDebug = 0;
|
||
|
|
||
|
int fifolen = uart_ll_get_rxfifo_len(gdb_uart);
|
||
|
while (fifolen != 0) {
|
||
|
unsigned char data;
|
||
|
uart_ll_read_rxfifo(gdb_uart, &data, 1);
|
||
|
if (data == 0x3) {
|
||
|
doDebug = 1; //Check if any of the chars is Ctrl+C. Throw away rest.
|
||
|
}
|
||
|
if (data == '+') {
|
||
|
doDebug = 1; //Check if any of the chars is '+'. Throw away rest.
|
||
|
}
|
||
|
fifolen--;
|
||
|
}
|
||
|
uart_ll_clr_intsts_mask(gdb_uart, UART_INTR_RXFIFO_FULL | UART_INTR_RXFIFO_TOUT);
|
||
|
return doDebug;
|
||
|
}
|
||
|
|
||
|
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;
|
||
|
}
|
||
|
|
||
|
int esp_gdbstub_writemem(unsigned int addr, unsigned char data)
|
||
|
{
|
||
|
if (addr < 0x20000000 || addr >= 0x80000000) {
|
||
|
/* see cpu_configure_region_protection */
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
int *i = (int *)(addr & (~3));
|
||
|
if ((addr & 3) == 0) {
|
||
|
*i = (*i & 0xffffff00) | (data << 0);
|
||
|
}
|
||
|
if ((addr & 3) == 1) {
|
||
|
*i = (*i & 0xffff00ff) | (data << 8);
|
||
|
}
|
||
|
if ((addr & 3) == 2) {
|
||
|
*i = (*i & 0xff00ffff) | (data << 16);
|
||
|
}
|
||
|
if ((addr & 3) == 3) {
|
||
|
*i = (*i & 0x00ffffff) | (data << 24);
|
||
|
}
|
||
|
asm volatile("ISYNC\nISYNC\n");
|
||
|
|
||
|
return 0;
|
||
|
}
|