ESPTerm - ESP8266 terminal emulator. Branches: [master] patches, [work] next release
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espterm-firmware/user/cgiflash.c

74 lines
2.6 KiB

/*
Some flash handling cgi routines. Used for reading the existing flash and updating the ESPFS image.
*/
/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* Jeroen Domburg <jeroen@spritesmods.com> wrote this file. As long as you retain
* this notice you can do whatever you want with this stuff. If we meet some day,
* and you think this stuff is worth it, you can buy me a beer in return.
* ----------------------------------------------------------------------------
*/
#include <esp8266.h>
#include "cgiflash.h"
#include "espfs.h"
//Cgi that reads the SPI flash. Assumes 512KByte flash.
int ICACHE_FLASH_ATTR cgiReadFlash(HttpdConnData *connData) {
int *pos=(int *)&connData->cgiData;
if (connData->conn==NULL) {
//Connection aborted. Clean up.
return HTTPD_CGI_DONE;
}
if (*pos==0) {
os_printf("Start flash download.\n");
httpdStartResponse(connData, 200);
httpdHeader(connData, "Content-Type", "application/bin");
httpdEndHeaders(connData);
*pos=0x40200000;
return HTTPD_CGI_MORE;
}
//Send 1K of flash per call. We will get called again if we haven't sent 512K yet.
espconn_sent(connData->conn, (uint8 *)(*pos), 1024);
*pos+=1024;
if (*pos>=0x40200000+(512*1024)) return HTTPD_CGI_DONE; else return HTTPD_CGI_MORE;
}
//Cgi that allows the ESPFS image to be replaced via http POST
int ICACHE_FLASH_ATTR cgiUploadEspfs(HttpdConnData *connData) {
if (connData->conn==NULL) {
//Connection aborted. Clean up.
return HTTPD_CGI_DONE;
}
if(connData->post->len > ESPFS_SIZE){
// The uploaded file is too large
os_printf("ESPFS file too large\n");
httpdSend(connData, "HTTP/1.0 500 Internal Server Error\r\nServer: esp8266-httpd/0.3\r\nContent-Type: text/plain\r\nContent-Length: 24\r\n\r\nESPFS image loo large.\r\n", -1);
return HTTPD_CGI_DONE;
}
// The source should be 4byte aligned, so go ahead and flash whatever we have
int address = ESPFS_POS + connData->post->received - connData->post->buffLen;
if(address % SPI_FLASH_SEC_SIZE == 0){
// We need to erase this block
os_printf("Erasing flash at %d\n", address/SPI_FLASH_SEC_SIZE);
spi_flash_erase_sector(address/SPI_FLASH_SEC_SIZE);
}
// Write the data
os_printf("Writing at: 0x%x\n", address);
spi_flash_write(address, (uint32 *)connData->post->buff, connData->post->buffLen);
os_printf("Wrote %d bytes (%dB of %d)\n", connData->post->buffSize, connData->post->received, connData->post->len);//&connData->postBuff));
if (connData->post->received == connData->post->len){
httpdSend(connData, "Finished uploading", -1);
return HTTPD_CGI_DONE;
} else {
return HTTPD_CGI_MORE;
}
}