Tasmota/tasmota/xdrv_23_zigbee_9a_upload.ino

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2020-07-25 17:25:06 +01:00
/*
xdrv_23_zigbee_9a_upload.ino - zigbee: serial xmodem upload to MCU
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Copyright (C) 2021 Theo Arends and Stephan Hadinger
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This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef USE_ZIGBEE
#ifdef USE_ZIGBEE_EZSP
/*********************************************************************************************\
* MCU EFR32 firmware upload using xmodem
*
* Step 1 - Upload MCU firmware in ESP8266 flash free space (current size is about 200k)
* Step 2 - Upload MCU firmware from ESP8266 flash to MCU EFR32 using XMODEM protocol
* Step 3 - Restart
\*********************************************************************************************/
//#define ZIGBEE_BOOTLOADER_SOFTWARE_RESET_FIRST
#define XM_SOH 0x01
#define XM_EOT 0x04
#define XM_ACK 0x06
#define XM_CR 0x0d
#define XM_NAK 0x15
#define XM_CAN 0x18
#define XM_SUB 0x1a
enum ZbUploadSteps { ZBU_IDLE, ZBU_INIT,
ZBU_SOFTWARE_RESET, ZBU_SOFTWARE_SEND, ZBU_HARDWARE_RESET, ZBU_PROMPT,
ZBU_SYNC, ZBU_UPLOAD, ZBU_EOT, ZBU_COMPLETE, ZBU_DONE, ZBU_ERROR, ZBU_FINISH };
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const uint8_t PIN_ZIGBEE_BOOTLOADER = 5;
struct ZBUPLOAD {
uint32_t ota_size = 0;
uint32_t sector_counter = 0;
uint32_t byte_counter = 0;
char *buffer;
uint8_t ota_step = ZBU_IDLE;
uint8_t bootloader = 0;
uint8_t state = ZBU_IDLE;
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} ZbUpload;
/*********************************************************************************************\
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* Flash from ESP8266 to EZSP
\*********************************************************************************************/
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uint32_t ZigbeeUploadAvailable(void) {
int available = ZbUpload.ota_size - ZbUpload.byte_counter;
if (available < 0) { available = 0; }
return available;
}
char ZigbeeUploadFlashRead(void) {
if (0 == ZbUpload.byte_counter) {
if (!(ZbUpload.buffer = (char *)malloc(SPI_FLASH_SEC_SIZE))) {
return (-1); // Not enough (memory) space
}
}
uint32_t index = ZbUpload.byte_counter % SPI_FLASH_SEC_SIZE;
if (0 == index) {
ESP.flashRead(ZbUpload.sector_counter * SPI_FLASH_SEC_SIZE, (uint32_t*)ZbUpload.buffer, SPI_FLASH_SEC_SIZE);
ZbUpload.sector_counter++;
}
char data = ZbUpload.buffer[index];
ZbUpload.byte_counter++;
if (ZbUpload.byte_counter > ZbUpload.ota_size) {
// static bool padding = true;
// if (padding) {
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// AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Start padding from %d"), ZbUpload.byte_counter);
// padding = false;
// }
// When the source device reaches the last XModem data block, it should be padded to 128 bytes
// of data using SUB (ASCII 0x1A) characters.
data = XM_SUB;
// if (ZbUpload.buffer) { free(ZbUpload.buffer); } // Don't in case of retries
}
return data;
}
/*********************************************************************************************\
* XModem protocol
\*********************************************************************************************/
// Number of milliseconds to wait before prompt is received
const uint32_t XMODEM_FLUSH_DELAY = 1000;
// Number of seconds until giving up hope of receiving sync packets from host.
const uint8_t XMODEM_SYNC_TIMEOUT = 30;
// Number of times we try to send a packet to the host until we give up sending..
const uint8_t XMODEM_MAX_RETRY = 30;
// Packet size
const uint8_t XMODEM_PACKET_SIZE = 128;
struct XMODEM {
uint32_t timeout = 0;
uint32_t delay = 0;
uint32_t flush_delay = 0xFFFFFFFF;
uint32_t filepos = 0;
uint32_t packet_no = 1;
int crcBuf = 0;
uint8_t checksumBuf = 0;
bool oldChecksum;
} XModem;
// Send out a byte of payload data, includes checksumming
void XModemOutputByte(uint8_t out_char) {
XModem.checksumBuf += out_char;
XModem.crcBuf = XModem.crcBuf ^ (int) out_char << 8;
for (uint32_t i = 0; i < 8; i++) {
if (XModem.crcBuf & 0x8000) {
XModem.crcBuf = XModem.crcBuf << 1 ^ 0x1021;
} else {
XModem.crcBuf = XModem.crcBuf << 1;
}
}
ZigbeeSerial->write(out_char);
}
// Wait for the remote to acknowledge or cancel.
// Returns the received char if no timeout occured or a CAN was received. In this cases, it returns -1.
char XModemWaitACK(void)
{
char in_char;
do {
uint8_t i = 0;
while (!ZigbeeSerial->available()) {
delayMicroseconds(100);
i++;
if (i > 200) { return -1; }
}
in_char = ZigbeeSerial->read();
// if (in_char != XM_ACK) {
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// AddLog(LOG_LEVEL_DEBUG_MORE, PSTR("XMD: Rcvd3 0x%02X"), in_char);
// }
if (XM_CAN == in_char) { return XM_CAN; }
} while ((in_char != XM_NAK) && (in_char != XM_ACK) && (in_char != 'C'));
return in_char;
}
bool XModemSendPacket(uint32_t packet_no) {
XModem.filepos = ZbUpload.byte_counter;
// Sending a packet will be retried
uint32_t retries = 0;
char in_char;
do {
// Seek to start of current data block,
// will advance through the file as block will be acked..
ZbUpload.byte_counter = XModem.filepos;
// Reset checksum stuff
XModem.checksumBuf = 0x00;
XModem.crcBuf = 0x00;
uint8_t packet_num = packet_no;
// Try to send packet, so header first
ZigbeeSerial->write(XM_SOH);
ZigbeeSerial->write(packet_num);
ZigbeeSerial->write(~packet_num);
for (uint32_t i = 0; i < XMODEM_PACKET_SIZE; i++) {
in_char = ZigbeeUploadFlashRead();
XModemOutputByte(in_char);
}
// Send out checksum, either CRC-16 CCITT or classical inverse of sum of bytes.
// Depending on how the received introduced himself
if (XModem.oldChecksum) {
ZigbeeSerial->write((char)XModem.checksumBuf);
} else {
ZigbeeSerial->write((char)(XModem.crcBuf >> 8));
ZigbeeSerial->write((char)(XModem.crcBuf & 0xFF));
}
in_char = XModemWaitACK();
if (XM_CAN == in_char) { return false; }
retries++;
if (retries > XMODEM_MAX_RETRY) { return false; }
} while (in_char != XM_ACK);
return true;
}
/*********************************************************************************************\
* Step 2 - Upload MCU firmware from ESP8266 flash to MCU EFR32 using XMODEM protocol
*
* https://www.silabs.com/documents/public/application-notes/an760-using-legacy-standalone-bootloader.pdf
\*********************************************************************************************/
void ZigbeeUploadSetSoftwareBootloader() {
// https://github.com/arendst/Tasmota/issues/8583#issuecomment-663967883
SBuffer buf(4);
buf.add16(EZSP_launchStandaloneBootloader);
buf.add8(0x01);
ZigbeeEZSPSendCmd(buf.getBuffer(), buf.len()); // Send software bootloader init
}
void ZigbeeUploadSetBootloader(uint8_t state) {
pinMode(PIN_ZIGBEE_BOOTLOADER, OUTPUT);
digitalWrite(PIN_ZIGBEE_BOOTLOADER, state); // Toggle Gecko bootloader
digitalWrite(Pin(GPIO_ZIGBEE_RST), 0);
delay(100); // Need to experiment to find a value as low as possible
digitalWrite(Pin(GPIO_ZIGBEE_RST), 1); // Reboot MCU EFR32
}
bool ZigbeeUploadBootloaderPrompt(void) {
// Scripts that interact with the bootloader should use only the “BL >” prompt to determine
// when the bootloader is ready for input. While current menu options should remain functionally
// unchanged, the menu title and options text is liable to change, and new options might be added.
uint8_t serial_buffer[255];
uint32_t buf_len = 0;
while (ZigbeeSerial->available()) {
yield();
char bootloader_byte = ZigbeeSerial->read();
// [cr][lf]
// Gecko Bootloader v1.A.3 or Gecko Bootloader v1.9.1.04[cr][lf]
// 1. upload gbl[cr][lf]
// 2. run[cr][lf]
// 3. ebl info[cr][lf]
// BL >
if (((uint8_t)bootloader_byte >=0) && (buf_len < sizeof(serial_buffer) -2)) {
serial_buffer[buf_len++] = bootloader_byte;
}
if (ZbUpload.byte_counter != 4) {
switch (ZbUpload.byte_counter) {
case 0:
if ('B' == bootloader_byte) { ZbUpload.byte_counter++; } break;
case 1:
if ('L' == bootloader_byte) { ZbUpload.byte_counter++; } break;
case 2:
if (' ' == bootloader_byte) { ZbUpload.byte_counter++; } break;
case 3:
if ('>' == bootloader_byte) {
ZbUpload.byte_counter++;
XModem.flush_delay = millis() + XMODEM_FLUSH_DELAY;
XModem.delay = XModem.flush_delay + XMODEM_FLUSH_DELAY;
}
}
}
}
if (buf_len) {
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AddLog(LOG_LEVEL_DEBUG_MORE, PSTR("XMD: Rcvd %*_H"), buf_len, serial_buffer);
}
return ((4 == ZbUpload.byte_counter) && (millis() > XModem.flush_delay));
}
bool ZigbeeUploadXmodem(void) {
switch (ZbUpload.ota_step) {
case ZBU_IDLE: { // *** Upload disabled
return false;
}
#ifdef ZIGBEE_BOOTLOADER_SOFTWARE_RESET_FIRST
case ZBU_INIT: { // *** Init ESF32 bootloader
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Init bootloader"));
ZbUpload.ota_step = ZBU_SOFTWARE_RESET;
return false; // Keep Zigbee serial active
}
case ZBU_SOFTWARE_RESET: {
SBuffer buf(4);
buf.add16(EZSP_launchStandaloneBootloader);
buf.add8(0x01);
ZigbeeEZSPSendCmd(buf.getBuffer(), buf.len()); // Send software bootloader init
XModem.timeout = millis() + (10 * 1000); // Allow 10 seconds to send Zigbee command
ZbUpload.ota_step = ZBU_SOFTWARE_SEND;
return false; // Keep Zigbee serial active
}
case ZBU_SOFTWARE_SEND: {
if (millis() > XModem.timeout) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Bootloader software reset send timeout"));
ZbUpload.ota_step = ZBU_HARDWARE_RESET;
return true;
}
if (EZSP_Serial.to_send == EZSP_Serial.to_end) {
ZbUpload.bootloader = ZBU_SOFTWARE_RESET;
XModem.timeout = millis() + (10 * 1000); // Allow 10 seconds to receive EBL prompt
XModem.delay = millis() + (2 * XMODEM_FLUSH_DELAY);
ZbUpload.byte_counter = 0;
ZbUpload.ota_step = ZBU_PROMPT;
}
break;
}
case ZBU_HARDWARE_RESET: {
ZbUpload.bootloader = ZBU_HARDWARE_RESET;
ZigbeeUploadSetBootloader(0); // Reboot MCU EFR32 which returns below text
XModem.timeout = millis() + (30 * 1000); // Allow 30 seconds to receive EBL prompt
XModem.delay = millis() + (2 * XMODEM_FLUSH_DELAY);
ZbUpload.byte_counter = 0;
ZbUpload.ota_step = ZBU_PROMPT;
break;
}
case ZBU_PROMPT: { // *** Wait for prompt and select option upload ebl
if (millis() > XModem.timeout) {
if (ZBU_SOFTWARE_RESET == ZbUpload.bootloader) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Bootloader software reset timeout"));
ZbUpload.ota_step = ZBU_HARDWARE_RESET;
} else {
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Bootloader hardware reset timeout"));
ZbUpload.ota_step = ZBU_ERROR;
}
return true;
}
#else // No ZIGBEE_BOOTLOADER_SOFTWARE_RESET_FIRST
case ZBU_INIT: { // *** Init ESF32 bootloader
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Init bootloader"));
ZigbeeUploadSetBootloader(0); // Reboot MCU EFR32 which returns below text
XModem.timeout = millis() + (30 * 1000); // Allow 30 seconds to receive EBL prompt
XModem.delay = millis() + (2 * XMODEM_FLUSH_DELAY);
ZbUpload.byte_counter = 0;
ZbUpload.ota_step = ZBU_PROMPT;
break;
}
case ZBU_PROMPT: { // *** Wait for prompt and select option upload ebl
if (millis() > XModem.timeout) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Bootloader timeout"));
ZbUpload.ota_step = ZBU_ERROR;
return true;
}
#endif // ZIGBEE_BOOTLOADER_SOFTWARE_RESET_FIRST
else if (!ZigbeeSerial->available() && (millis() < XModem.flush_delay)) {
// The target devices bootloader sends output over its serial port after it receives a
// carriage return from the source device
if (millis() > XModem.delay) {
ZigbeeSerial->write(XM_CR);
XModem.delay = millis() + (2 * XMODEM_FLUSH_DELAY);
}
} else {
// After the bootloader receives a carriage return from the target device, it displays a menu
// [cr][lf]
// Gecko Bootloader v1.A.3 or Gecko Bootloader v1.9.1.04[cr][lf]
// 1. upload gbl[cr][lf]
// 2. run[cr][lf]
// 3. ebl info[cr][lf]
// BL >
if (ZigbeeUploadBootloaderPrompt()) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Init sync"));
ZigbeeSerial->flush();
ZigbeeSerial->write('1'); // upload ebl
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if (TasmotaGlobal.sleep > 0) {
TasmotaGlobal.sleep = 1; // Speed up loop used for xmodem upload
}
XModem.timeout = millis() + (XMODEM_SYNC_TIMEOUT * 1000);
ZbUpload.ota_step = ZBU_SYNC;
}
}
break;
}
case ZBU_SYNC: { // *** Handle file upload using XModem - sync
if (millis() > XModem.timeout) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: SYNC timeout"));
ZbUpload.ota_step = ZBU_ERROR;
return true;
}
// Wait for either C or NACK as a sync packet. Determines protocol details, checksum algorithm.
if (ZigbeeSerial->available()) {
// [cr][lf]
// begin upload[cr][lf]
// C
char xmodem_sync = ZigbeeSerial->read();
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// AddLog(LOG_LEVEL_DEBUG_MORE, PSTR("XMD: Rcvd2 0x%02X"), xmodem_sync);
if (('C' == xmodem_sync) || (XM_NAK == xmodem_sync)) {
// Determine which checksum algorithm to use
XModem.oldChecksum = (xmodem_sync == XM_NAK);
XModem.packet_no = 1;
ZbUpload.byte_counter = 0;
ZbUpload.ota_step = ZBU_UPLOAD;
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Init packet send"));
}
}
break;
}
case ZBU_UPLOAD: { // *** Handle file upload using XModem - upload
if (ZigbeeUploadAvailable()) {
if (ZbUpload.byte_counter && !(ZbUpload.byte_counter % 10240)) { // Show progress every 10kB
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Progress %d kB"), ZbUpload.byte_counter / 1024);
}
if (!XModemSendPacket(XModem.packet_no)) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Packet %d send failed"), XModem.packet_no);
ZbUpload.ota_step = ZBU_ERROR;
return true;
}
XModem.packet_no++;
} else {
// Once the last block is ACKed by the target, the transfer should be finalized by an
// EOT (ASCII 0x04) packet from the source. Once this packet is confirmed via XModem ACK
// from the target, the device will reboot, causing the new firmware to be launched.
ZigbeeSerial->write(XM_EOT);
XModem.timeout = millis() + (30 * 1000); // Allow 30 seconds to receive EOT ACK
ZbUpload.ota_step = ZBU_EOT;
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Transferred %d bytes"), ZbUpload.ota_size);
}
break;
}
case ZBU_EOT: { // *** Send EOT and wait for ACK
// The ACK for the last XModem data packet may take much longer (1-3 seconds) than prior
// data packets to be received. This is due to the CRC32 checksum being performed across
// the received EBL file data prior to sending the ACK. The source device must ensure that
// its XModem state machine waits a sufficient amount of time to allow this checksum process
// to occur without timing out on the response just before the EOT is sent.
if (millis() > XModem.timeout) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: EOT ACK timeout"));
ZbUpload.ota_step = ZBU_ERROR;
return true;
}
if (ZigbeeSerial->available()) {
char xmodem_ack = XModemWaitACK();
if (XM_CAN == xmodem_ack) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Transfer invalid"));
ZbUpload.ota_step = ZBU_ERROR;
return true;
}
else if (XM_ACK == xmodem_ack) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: " D_SUCCESSFUL));
XModem.timeout = millis() + (30 * 1000); // Allow 30 seconds to receive EBL prompt
ZbUpload.byte_counter = 0;
ZbUpload.ota_step = ZBU_COMPLETE;
}
}
break;
}
case ZBU_COMPLETE: { // *** Wait for Serial upload complete EBL prompt
if (millis() > XModem.timeout) {
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: Bootloader timeout"));
ZbUpload.ota_step = ZBU_ERROR;
return true;
} else {
// After an image successfully uploads, the XModem transaction completes and the bootloader displays
// Serial upload complete before redisplaying the menu
//
// [cr][lf]
// Serial upload complete[cr][lf]
// [cr][lf]
// Gecko Bootloader v1.A.3 or Gecko Bootloader v1.9.1.04[cr][lf]
// 1. upload gbl[cr][lf]
// 2. run[cr][lf]
// 3. ebl info[cr][lf]
// BL >
if (ZigbeeUploadBootloaderPrompt()) {
ZbUpload.state = ZBU_COMPLETE;
ZbUpload.ota_step = ZBU_DONE;
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: " D_RESTARTING));
}
}
break;
}
case ZBU_ERROR:
ZbUpload.state = ZBU_ERROR;
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AddLog(LOG_LEVEL_DEBUG, PSTR("XMD: " D_FAILED));
case ZBU_DONE: { // *** Clean up and restart to disable bootloader and use new firmware
ZigbeeUploadSetBootloader(1); // Disable bootloader and reset MCU - should happen at restart
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if (1 == TasmotaGlobal.sleep) {
TasmotaGlobal.sleep = Settings.sleep; // Restore loop sleep
}
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// TasmotaGlobal.restart_flag = 2; // Restart to disable bootloader and use new firmware
if (ZbUpload.buffer) { free(ZbUpload.buffer); }
ZbUpload.ota_step = ZBU_FINISH; // Never return to zero without a restart to get a sane Zigbee environment
break;
}
case ZBU_FINISH: { // *** Wait for restart making sure not to start Zigbee serial again
// Wait for restart
break;
}
}
return true;
}
/*********************************************************************************************\
* Step 1 - Upload MCU firmware in ESP8266 flash free space (current size is about 200k)
\*********************************************************************************************/
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#ifdef USE_WEBSERVER
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uint8_t ZigbeeUploadStep1Init(void) {
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if (!PinUsed(GPIO_ZIGBEE_RST) && (ZigbeeSerial == nullptr)) { return 1; } // Wrong pin configuration - No file selected
ZbUpload.ota_step = ZBU_IDLE;
ZbUpload.state = ZBU_IDLE;
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return 0;
}
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void ZigbeeUploadStep1Done(uint32_t data, size_t size) {
ZbUpload.sector_counter = data;
ZbUpload.ota_size = size;
ZbUpload.ota_step = ZBU_INIT;
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ZbUpload.state = ZBU_UPLOAD; // Signal upload done and ready for delayed upload to MCU EFR32
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}
#define WEB_HANDLE_ZIGBEE_XFER "zx"
const char HTTP_SCRIPT_XFER_STATE[] PROGMEM =
"function z9(){"
"if(x!=null){x.abort();}" // Abort if no response within 2 seconds (happens on restart 1)
"x=new XMLHttpRequest();"
"x.onreadystatechange=function(){"
"if(x.readyState==4&&x.status==200){"
"var s=x.responseText;"
"if(s!=7){" // ZBU_UPLOAD
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"location.href='/u3';" // Load page HandleUploadDone()
"}"
"}"
"};"
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"x.open('GET','" WEB_HANDLE_ZIGBEE_XFER "?z=1',true);" // ?z related to Webserver->hasArg("z")
"x.send();"
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"lt=setTimeout(z9,950);" // Poll every 0.95 second
"}"
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"wl(z9);"; // Execute z9() on page load
void HandleZigbeeXfer(void) {
if (!HttpCheckPriviledgedAccess()) { return; }
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if (Webserver->hasArg("z")) { // Status refresh requested
if (ZBU_ERROR == ZbUpload.state) {
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Web.upload_error = 7; // Upload aborted (xmodem transfer failed)
}
WSContentBegin(200, CT_PLAIN);
WSContentSend_P(PSTR("%d"), ZbUpload.state);
WSContentEnd();
return;
}
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AddLog(LOG_LEVEL_DEBUG, PSTR(D_LOG_HTTP D_UPLOAD_TRANSFER));
WSContentStart_P(PSTR(D_INFORMATION));
WSContentSend_P(HTTP_SCRIPT_XFER_STATE);
WSContentSendStyle();
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WSContentSend_P(PSTR("<div style='text-align:center;'><b>" D_UPLOAD_TRANSFER " ...</b></div>"));
WSContentSpaceButton(BUTTON_MAIN);
WSContentStop();
}
#endif // USE_WEBSERVER
#endif // USE_ZIGBEE_EZSP
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#endif // USE_ZIGBEE