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rewrite serbridge buffering

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v1.0 v1.0.2
Thorsten von Eicken 9 years ago
parent b48614c373
commit 45cfe914d5
2 changed files with 288 additions and 281 deletions
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  1. 556
      serial/serbridge.c
  2. 13
      serial/serbridge.h

556
serial/serbridge.c
Unescape View File

@ -22,65 +22,79 @@ sint8 ICACHE_FLASH_ATTR espbuffsend(serbridgeConnData *conn, const char *data,
// Connection pool
serbridgeConnData connData[MAX_CONN];
// Transmit buffers for the connection pool
static char txbuffer[MAX_CONN][MAX_TXBUFFER];
// Given a pointer to an espconn struct find the connection that correcponds to it
static serbridgeConnData ICACHE_FLASH_ATTR *serbridgeFindConnData(void *arg) {
for (int i=0; i<MAX_CONN; i++) {
if (connData[i].conn == (struct espconn *)arg) {
return &connData[i];
}
}
//os_printf("FindConnData: Huh? Couldn't find connection for %p\n", arg);
return NULL; // not found, may be closed already...
}
// Send all data in conn->txbuffer
// returns result from espconn_sent if data in buffer or ESPCONN_OK (0)
// Use only internally from espbuffsend and serbridgeSentCb
static sint8 ICACHE_FLASH_ATTR sendtxbuffer(serbridgeConnData *conn) {
sint8 result = ESPCONN_OK;
if (conn->txbufferlen != 0) {
//os_printf("%d TX %d\n", system_get_time(), conn->txbufferlen);
conn->readytosend = false;
result = espconn_sent(conn->conn, (uint8_t*)conn->txbuffer, conn->txbufferlen);
conn->txbufferlen = 0;
if (result != ESPCONN_OK) {
os_printf("sendtxbuffer: espconn_sent error %d on conn %p\n", result, conn);
}
}
return result;
sint8 result = ESPCONN_OK;
if (conn->txbufferlen != 0) {
//os_printf("%d TX %d\n", system_get_time(), conn->txbufferlen);
conn->readytosend = false;
result = espconn_sent(conn->conn, (uint8_t*)conn->txbuffer, conn->txbufferlen);
if (result != ESPCONN_OK) {
os_printf("sendtxbuffer: espconn_sent error %d on conn %p\n", result, conn);
conn->txbufferlen = 0;
} else {
conn->sentbuffer = conn->txbuffer;
conn->txbuffer = NULL;
conn->txbufferlen = 0;
}
}
return result;
}
static char *tx_full_msg = "espbuffsend: txbuffer full on conn %p\n";
// espbuffsend adds data to the send buffer. If the previous send was completed it calls
// sendtxbuffer and espconn_sent.
// Returns ESPCONN_OK (0) for success, -128 if buffer is full or error from espconn_sent
// Use espbuffsend instead of espconn_sent as it solves the problem that espconn_sent must
// only be called *after* receiving an espconn_sent_callback for the previous packet.
sint8 ICACHE_FLASH_ATTR espbuffsend(serbridgeConnData *conn, const char *data, uint16 len) {
if (conn->txbufferlen + len > MAX_TXBUFFER) {
os_printf("espbuffsend: txbuffer full on conn %p\n", conn);
return -128;
}
os_memcpy(conn->txbuffer + conn->txbufferlen, data, len);
conn->txbufferlen += len;
if (conn->readytosend) {
return sendtxbuffer(conn);
} else {
//os_printf("%d QU %d\n", system_get_time(), conn->txbufferlen);
}
return ESPCONN_OK;
if (conn->txbufferlen >= MAX_TXBUFFER) {
os_printf(tx_full_msg, conn);
return -128;
}
// make sure we indeed have a buffer
if (conn->txbuffer == NULL) conn->txbuffer = os_zalloc(MAX_TXBUFFER);
if (conn->txbuffer == NULL) {
os_printf("espbuffsend: cannot alloc tx buffer\n");
return -128;
}
// add to send buffer
uint16_t avail = conn->txbufferlen+len > MAX_TXBUFFER ? MAX_TXBUFFER-conn->txbufferlen : len;
os_memcpy(conn->txbuffer + conn->txbufferlen, data, avail);
conn->txbufferlen += len;
// try to send
sint8 result = ESPCONN_OK;
if (conn->readytosend) result = sendtxbuffer(conn);
if (avail < len) {
// some data didn't fit into the buffer
if (conn->txbufferlen == 0) {
// we sent the prior buffer, so try again
return espbuffsend(conn, data+avail, len-avail);
}
os_printf(tx_full_msg, conn);
return -128;
}
return result;
}
//callback after the data are sent
static void ICACHE_FLASH_ATTR serbridgeSentCb(void *arg) {
serbridgeConnData *conn = serbridgeFindConnData(arg);
//os_printf("Sent callback on conn %p\n", conn);
if (conn == NULL) return;
//os_printf("%d ST\n", system_get_time());
conn->readytosend = true;
sendtxbuffer(conn); // send possible new data in txbuffer
serbridgeConnData *conn = ((struct espconn*)arg)->reverse;
//os_printf("Sent callback on conn %p\n", conn);
if (conn == NULL) return;
//os_printf("%d ST\n", system_get_time());
if (conn->sentbuffer != NULL) os_free(conn->sentbuffer);
conn->sentbuffer = NULL;
conn->readytosend = true;
sendtxbuffer(conn); // send possible new data in txbuffer
}
// Telnet protocol characters
@ -102,265 +116,257 @@ enum { TN_normal, TN_iac, TN_will, TN_start, TN_end, TN_comPort, TN_setControl }
static uint8_t ICACHE_FLASH_ATTR
telnetUnwrap(uint8_t *inBuf, int len, uint8_t state)
{
for (int i=0; i<len; i++) {
uint8_t c = inBuf[i];
switch (state) {
default:
case TN_normal:
if (c == IAC) state = TN_iac; // escape char: see what's next
else uart0_write_char(c); // regular char
break;
case TN_iac:
switch (c) {
case IAC: // second escape -> write one to outbuf and go normal again
state = TN_normal;
uart0_write_char(c);
break;
case WILL: // negotiation
state = TN_will;
break;
case SB: // command sequence begin
state = TN_start;
break;
case SE: // command sequence end
state = TN_normal;
break;
default: // not sure... let's ignore
uart0_write_char(IAC);
uart0_write_char(c);
}
break;
case TN_will:
state = TN_normal; // yes, we do COM port options, let's go back to normal
break;
case TN_start: // in command seq, now comes the type of cmd
if (c == ComPortOpt) state = TN_comPort;
else state = TN_end; // an option we don't know, skip 'til the end seq
break;
case TN_end: // wait for end seq
if (c == IAC) state = TN_iac; // simple wait to accept end or next escape seq
break;
case TN_comPort:
if (c == SetControl) state = TN_setControl;
else state = TN_end;
break;
case TN_setControl: // switch control line and delay a tad
switch (c) {
case DTR_ON:
if (mcu_reset_pin >= 0) {
os_printf("MCU reset gpio%d\n", mcu_reset_pin);
GPIO_OUTPUT_SET(mcu_reset_pin, 0);
os_delay_us(100L);
} else os_printf("MCU reset: no pin\n");
break;
case DTR_OFF:
if (mcu_reset_pin >= 0) {
GPIO_OUTPUT_SET(mcu_reset_pin, 1);
os_delay_us(100L);
}
break;
case RTS_ON:
if (mcu_isp_pin >= 0) {
os_printf("MCU ISP gpio%d\n", mcu_isp_pin);
GPIO_OUTPUT_SET(mcu_isp_pin, 0);
os_delay_us(100L);
} else os_printf("MCU isp: no pin\n");
break;
case RTS_OFF:
if (mcu_isp_pin >= 0) {
GPIO_OUTPUT_SET(mcu_isp_pin, 1);
os_delay_us(100L);
}
break;
}
state = TN_end;
break;
}
}
return state;
for (int i=0; i<len; i++) {
uint8_t c = inBuf[i];
switch (state) {
default:
case TN_normal:
if (c == IAC) state = TN_iac; // escape char: see what's next
else uart0_write_char(c); // regular char
break;
case TN_iac:
switch (c) {
case IAC: // second escape -> write one to outbuf and go normal again
state = TN_normal;
uart0_write_char(c);
break;
case WILL: // negotiation
state = TN_will;
break;
case SB: // command sequence begin
state = TN_start;
break;
case SE: // command sequence end
state = TN_normal;
break;
default: // not sure... let's ignore
uart0_write_char(IAC);
uart0_write_char(c);
}
break;
case TN_will:
state = TN_normal; // yes, we do COM port options, let's go back to normal
break;
case TN_start: // in command seq, now comes the type of cmd
if (c == ComPortOpt) state = TN_comPort;
else state = TN_end; // an option we don't know, skip 'til the end seq
break;
case TN_end: // wait for end seq
if (c == IAC) state = TN_iac; // simple wait to accept end or next escape seq
break;
case TN_comPort:
if (c == SetControl) state = TN_setControl;
else state = TN_end;
break;
case TN_setControl: // switch control line and delay a tad
switch (c) {
case DTR_ON:
if (mcu_reset_pin >= 0) {
os_printf("MCU reset gpio%d\n", mcu_reset_pin);
GPIO_OUTPUT_SET(mcu_reset_pin, 0);
os_delay_us(100L);
} else os_printf("MCU reset: no pin\n");
break;
case DTR_OFF:
if (mcu_reset_pin >= 0) {
GPIO_OUTPUT_SET(mcu_reset_pin, 1);
os_delay_us(100L);
}
break;
case RTS_ON:
if (mcu_isp_pin >= 0) {
os_printf("MCU ISP gpio%d\n", mcu_isp_pin);
GPIO_OUTPUT_SET(mcu_isp_pin, 0);
os_delay_us(100L);
} else os_printf("MCU isp: no pin\n");
break;
case RTS_OFF:
if (mcu_isp_pin >= 0) {
GPIO_OUTPUT_SET(mcu_isp_pin, 1);
os_delay_us(100L);
}
break;
}
state = TN_end;
break;
}
}
return state;
}
void ICACHE_FLASH_ATTR serbridgeReset() {
if (mcu_reset_pin >= 0) {
os_printf("MCU reset gpio%d\n", mcu_reset_pin);
GPIO_OUTPUT_SET(mcu_reset_pin, 0);
os_delay_us(100L);
GPIO_OUTPUT_SET(mcu_reset_pin, 1);
} else os_printf("MCU reset: no pin\n");
if (mcu_reset_pin >= 0) {
os_printf("MCU reset gpio%d\n", mcu_reset_pin);
GPIO_OUTPUT_SET(mcu_reset_pin, 0);
os_delay_us(100L);
GPIO_OUTPUT_SET(mcu_reset_pin, 1);
} else os_printf("MCU reset: no pin\n");
}
// Receive callback
static void ICACHE_FLASH_ATTR serbridgeRecvCb(void *arg, char *data, unsigned short len) {
serbridgeConnData *conn = serbridgeFindConnData(arg);
//os_printf("Receive callback on conn %p\n", conn);
if (conn == NULL) return;
// at the start of a connection we're in cmInit mode and we wait for the first few characters
// to arrive in order to decide what type of connection this is.. The following if statements
// do this dispatch. An issue here is that we assume that the first few characters all arrive
// in the same TCP packet, which is true if the sender is a program, but not necessarily
// if the sender is a person typing (although in that case the line-oriented TTY input seems
// to make it work too). If this becomes a problem we need to buffer the first few chars...
if (conn->conn_mode == cmInit) {
// If the connection starts with the Arduino or ARM reset sequence we perform a RESET
if ((len == 2 && strncmp(data, "0 ", 2) == 0) ||
(len == 2 && strncmp(data, "?\n", 2) == 0) ||
(len == 3 && strncmp(data, "?\r\n", 3) == 0)) {
os_printf("MCU Reset=%d ISP=%d\n", mcu_reset_pin, mcu_isp_pin);
os_delay_us(2*1000L); // time for os_printf to happen
// send reset to arduino/ARM
if (mcu_reset_pin >= 0) GPIO_OUTPUT_SET(mcu_reset_pin, 0);
os_delay_us(100L);
if (mcu_isp_pin >= 0) GPIO_OUTPUT_SET(mcu_isp_pin, 0);
os_delay_us(100L);
if (mcu_reset_pin >= 0) GPIO_OUTPUT_SET(mcu_reset_pin, 1);
os_delay_us(100L);
if (mcu_isp_pin >= 0) GPIO_OUTPUT_SET(mcu_isp_pin, 1);
os_delay_us(1000L);
conn->conn_mode = cmAVR;
// If the connection starts with a telnet negotiation we will do telnet
} else if (len >= 3 && strncmp(data, (char[]){IAC, WILL, ComPortOpt}, 3) == 0) {
conn->conn_mode = cmTelnet;
conn->telnet_state = TN_normal;
// note that the three negotiation chars will be gobbled-up by telnetUnwrap
os_printf("telnet mode\n");
// looks like a plain-vanilla connection!
} else {
conn->conn_mode = cmTransparent;
}
}
// write the buffer to the uart
if (conn->conn_mode == cmTelnet) {
conn->telnet_state = telnetUnwrap((uint8_t *)data, len, conn->telnet_state);
} else {
uart0_tx_buffer(data, len);
}
serledFlash(50); // short blink on serial LED
}
// Error callback (it's really poorly named, it's not a "connection reconnected" callback,
// it's really a "connection broken, please reconnect" callback)
static void ICACHE_FLASH_ATTR serbridgeReconCb(void *arg, sint8 err) {
serbridgeConnData *conn=serbridgeFindConnData(arg);
if (conn == NULL) return;
// Close the connection
espconn_disconnect(conn->conn);
conn->conn = NULL;
serbridgeConnData *conn = ((struct espconn*)arg)->reverse;
//os_printf("Receive callback on conn %p\n", conn);
if (conn == NULL) return;
// at the start of a connection we're in cmInit mode and we wait for the first few characters
// to arrive in order to decide what type of connection this is.. The following if statements
// do this dispatch. An issue here is that we assume that the first few characters all arrive
// in the same TCP packet, which is true if the sender is a program, but not necessarily
// if the sender is a person typing (although in that case the line-oriented TTY input seems
// to make it work too). If this becomes a problem we need to buffer the first few chars...
if (conn->conn_mode == cmInit) {
// If the connection starts with the Arduino or ARM reset sequence we perform a RESET
if ((len == 2 && strncmp(data, "0 ", 2) == 0) ||
(len == 2 && strncmp(data, "?\n", 2) == 0) ||
(len == 3 && strncmp(data, "?\r\n", 3) == 0)) {
os_printf("MCU Reset=%d ISP=%d\n", mcu_reset_pin, mcu_isp_pin);
os_delay_us(2*1000L); // time for os_printf to happen
// send reset to arduino/ARM
if (mcu_reset_pin >= 0) GPIO_OUTPUT_SET(mcu_reset_pin, 0);
os_delay_us(100L);
if (mcu_isp_pin >= 0) GPIO_OUTPUT_SET(mcu_isp_pin, 0);
os_delay_us(100L);
if (mcu_reset_pin >= 0) GPIO_OUTPUT_SET(mcu_reset_pin, 1);
os_delay_us(100L);
if (mcu_isp_pin >= 0) GPIO_OUTPUT_SET(mcu_isp_pin, 1);
os_delay_us(1000L);
conn->conn_mode = cmAVR;
// If the connection starts with a telnet negotiation we will do telnet
} else if (len >= 3 && strncmp(data, (char[]){IAC, WILL, ComPortOpt}, 3) == 0) {
conn->conn_mode = cmTelnet;
conn->telnet_state = TN_normal;
// note that the three negotiation chars will be gobbled-up by telnetUnwrap
os_printf("telnet mode\n");
// looks like a plain-vanilla connection!
} else {
conn->conn_mode = cmTransparent;
}
}
// write the buffer to the uart
if (conn->conn_mode == cmTelnet) {
conn->telnet_state = telnetUnwrap((uint8_t *)data, len, conn->telnet_state);
} else {
uart0_tx_buffer(data, len);
}
serledFlash(50); // short blink on serial LED
}
// Disconnection callback
static void ICACHE_FLASH_ATTR serbridgeDisconCb(void *arg) {
// Iterate through all the connections and deallocate the ones that are in a state that
// indicates that they're closed
for (int i=0; i<MAX_CONN; i++) {
if (connData[i].conn != NULL &&
(connData[i].conn->state == ESPCONN_NONE || connData[i].conn->state == ESPCONN_CLOSE))
{
if (connData[i].conn_mode == cmAVR) {
// send reset to arduino/ARM
if (mcu_reset_pin >= 0) {
GPIO_OUTPUT_SET(mcu_reset_pin, 0);
os_delay_us(100L);
GPIO_OUTPUT_SET(mcu_reset_pin, 1);
}
}
connData[i].conn = NULL;
}
}
serbridgeConnData *conn = ((struct espconn*)arg)->reverse;
if (conn == NULL) return;
// Free buffers
if (conn->sentbuffer != NULL) os_free(conn->sentbuffer);
conn->sentbuffer = NULL;
if (conn->txbuffer != NULL) os_free(conn->txbuffer);
conn->txbuffer = NULL;
conn->txbufferlen = 0;
// Send reset to attached uC if it was in programming mode
if (conn->conn_mode == cmAVR && mcu_reset_pin >= 0) {
GPIO_OUTPUT_SET(mcu_reset_pin, 0);
os_delay_us(100L);
GPIO_OUTPUT_SET(mcu_reset_pin, 1);
}
conn->conn = NULL;
}
// Connection reset callback (note that there will be no DisconCb)
static void ICACHE_FLASH_ATTR serbridgeResetCb(void *arg, sint8 err) {
os_printf("serbridge: connection reset err=%d\n", err);
serbridgeDisconCb(arg);
}
// New connection callback, use one of the connection descriptors, if we have one left.
static void ICACHE_FLASH_ATTR serbridgeConnectCb(void *arg) {
struct espconn *conn = arg;
//Find empty conndata in pool
int i;
for (i=0; i<MAX_CONN; i++) if (connData[i].conn==NULL) break;
os_printf("Accept port 23, conn=%p, pool slot %d\n", conn, i);
if (i==MAX_CONN) {
os_printf("Aiee, conn pool overflow!\n");
espconn_disconnect(conn);
return;
}
connData[i].conn=conn;
connData[i].txbufferlen = 0;
connData[i].readytosend = true;
connData[i].telnet_state = 0;
connData[i].conn_mode = cmInit;
espconn_regist_recvcb(conn, serbridgeRecvCb);
espconn_regist_reconcb(conn, serbridgeReconCb);
espconn_regist_disconcb(conn, serbridgeDisconCb);
espconn_regist_sentcb(conn, serbridgeSentCb);
espconn_set_opt(conn, ESPCONN_REUSEADDR|ESPCONN_NODELAY);
struct espconn *conn = arg;
//Find empty conndata in pool
int i;
for (i=0; i<MAX_CONN; i++) if (connData[i].conn==NULL) break;
os_printf("Accept port 23, conn=%p, pool slot %d\n", conn, i);
if (i==MAX_CONN) {
os_printf("Aiee, conn pool overflow!\n");
espconn_disconnect(conn);
return;
}
os_memset(connData+i, 0, sizeof(struct serbridgeConnData));
connData[i].conn = conn;
conn->reverse = connData+i;
connData[i].readytosend = true;
connData[i].conn_mode = cmInit;
espconn_regist_recvcb(conn, serbridgeRecvCb);
espconn_regist_disconcb(conn, serbridgeDisconCb);
espconn_regist_reconcb(conn, serbridgeResetCb);
espconn_regist_sentcb(conn, serbridgeSentCb);
espconn_set_opt(conn, ESPCONN_REUSEADDR|ESPCONN_NODELAY);
}
// callback with a buffer of characters that have arrived on the uart
void ICACHE_FLASH_ATTR
serbridgeUartCb(char *buf, int length) {
// push the buffer into the microcontroller console
for (int i=0; i<length; i++)
console_write_char(buf[i]);
// push the buffer into each open connection
for (int i = 0; i < MAX_CONN; ++i) {
if (connData[i].conn) {
espbuffsend(&connData[i], buf, length);
}
}
serledFlash(50); // short blink on serial LED
// push the buffer into the microcontroller console
for (int i=0; i<length; i++)
console_write_char(buf[i]);
// push the buffer into each open connection
for (int i = 0; i < MAX_CONN; ++i) {
if (connData[i].conn) {
espbuffsend(&connData[i], buf, length);
}
}
serledFlash(50); // short blink on serial LED
}
void ICACHE_FLASH_ATTR serbridgeInitPins() {
mcu_reset_pin = flashConfig.reset_pin;
mcu_isp_pin = flashConfig.isp_pin;
os_printf("Serbridge pins: reset=%d isp=%d swap=%d\n",
mcu_reset_pin, mcu_isp_pin, flashConfig.swap_uart);
if (flashConfig.swap_uart) {
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTCK_U, 4);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTDO_U, 4);
PIN_PULLUP_DIS(PERIPHS_IO_MUX_MTCK_U);
PIN_PULLUP_DIS(PERIPHS_IO_MUX_MTDO_U);
system_uart_swap();
} else {
PIN_FUNC_SELECT(PERIPHS_IO_MUX_U0TXD_U, 0);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_U0RXD_U, 0);
system_uart_de_swap();
}
// set both pins to 1 before turning them on so we don't cause a reset
if (mcu_isp_pin >= 0) GPIO_OUTPUT_SET(mcu_isp_pin, 1);
if (mcu_reset_pin >= 0) GPIO_OUTPUT_SET(mcu_reset_pin, 1);
// switch pin mux to make these pins GPIO pins
if (mcu_reset_pin >= 0) makeGpio(mcu_reset_pin);
if (mcu_isp_pin >= 0) makeGpio(mcu_isp_pin);
mcu_reset_pin = flashConfig.reset_pin;
mcu_isp_pin = flashConfig.isp_pin;
os_printf("Serbridge pins: reset=%d isp=%d swap=%d\n",
mcu_reset_pin, mcu_isp_pin, flashConfig.swap_uart);
if (flashConfig.swap_uart) {
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTCK_U, 4);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTDO_U, 4);
PIN_PULLUP_DIS(PERIPHS_IO_MUX_MTCK_U);
PIN_PULLUP_DIS(PERIPHS_IO_MUX_MTDO_U);
system_uart_swap();
} else {
PIN_FUNC_SELECT(PERIPHS_IO_MUX_U0TXD_U, 0);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_U0RXD_U, 0);
system_uart_de_swap();
}
// set both pins to 1 before turning them on so we don't cause a reset
if (mcu_isp_pin >= 0) GPIO_OUTPUT_SET(mcu_isp_pin, 1);
if (mcu_reset_pin >= 0) GPIO_OUTPUT_SET(mcu_reset_pin, 1);
// switch pin mux to make these pins GPIO pins
if (mcu_reset_pin >= 0) makeGpio(mcu_reset_pin);
if (mcu_isp_pin >= 0) makeGpio(mcu_isp_pin);
}
// Start transparent serial bridge TCP server on specified port (typ. 23)
void ICACHE_FLASH_ATTR serbridgeInit(int port) {
serbridgeInitPins();
int i;
for (i = 0; i < MAX_CONN; i++) {
connData[i].conn = NULL;
connData[i].txbuffer = txbuffer[i];
}
serbridgeConn.type = ESPCONN_TCP;
serbridgeConn.state = ESPCONN_NONE;
serbridgeTcp.local_port = port;
serbridgeConn.proto.tcp = &serbridgeTcp;
espconn_regist_connectcb(&serbridgeConn, serbridgeConnectCb);
espconn_accept(&serbridgeConn);
espconn_tcp_set_max_con_allow(&serbridgeConn, MAX_CONN);
espconn_regist_time(&serbridgeConn, SER_BRIDGE_TIMEOUT, 0);
serbridgeInitPins();
for (int i = 0; i < MAX_CONN; i++) {
connData[i].conn = NULL;
}
serbridgeConn.type = ESPCONN_TCP;
serbridgeConn.state = ESPCONN_NONE;
serbridgeTcp.local_port = port;
serbridgeConn.proto.tcp = &serbridgeTcp;
espconn_regist_connectcb(&serbridgeConn, serbridgeConnectCb);
espconn_accept(&serbridgeConn);
espconn_tcp_set_max_con_allow(&serbridgeConn, MAX_CONN);
espconn_regist_time(&serbridgeConn, SER_BRIDGE_TIMEOUT, 0);
}

13
serial/serbridge.h
Unescape View File

@ -8,8 +8,8 @@
#define MAX_CONN 4
#define SER_BRIDGE_TIMEOUT 28799
//Max send buffer len
#define MAX_TXBUFFER 1024
// Send buffer size
#define MAX_TXBUFFER 2048
typedef struct serbridgeConnData serbridgeConnData;
@ -25,10 +25,11 @@ enum connModes {
struct serbridgeConnData {
struct espconn *conn;
enum connModes conn_mode; // connection mode
char *txbuffer; // buffer for the data to send
uint16 txbufferlen; // length of data in txbuffer
bool readytosend; // true, if txbuffer can send by espconn_sent
enum connModes conn_mode; // connection mode
char *txbuffer; // buffer for the data to send
uint16 txbufferlen; // length of data in txbuffer
char *sentbuffer; // buffer sent, awaiting callback to get freed
bool readytosend; // true, if txbuffer can be sent by espconn_sent
uint8_t telnet_state;
};

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