esp8266: minor, fix spacing
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90dbc57166
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a8b7726c35
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@ -51,8 +51,8 @@ static void radio_esp8266_transmit(uint8_t* data, uint8_t length) {
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}
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}
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usart_disable_tx_interrupt(USART(RADIO_ESP8266_USART)); // ensure transmit interrupt is disable to prevent index corruption (the ISR should already have done it)
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usart_disable_tx_interrupt(USART(RADIO_ESP8266_USART)); // ensure transmit interrupt is disable to prevent index corruption (the ISR should already have done it)
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radio_esp8266_activity = false; // reset status because of new activity
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radio_esp8266_activity = false; // reset status because of new activity
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for (tx_used=0; tx_used<length && tx_used<LENGTH(tx_buffer); tx_used++) { // copy data
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for (tx_used = 0; tx_used < length && tx_used < LENGTH(tx_buffer); tx_used++) { // copy data
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tx_buffer[tx_used] = data[length-1-tx_used]; // put character in buffer (in reverse order)
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tx_buffer[tx_used] = data[length - 1 - tx_used]; // put character in buffer (in reverse order)
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}
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}
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if (tx_used) {
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if (tx_used) {
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usart_enable_tx_interrupt(USART(RADIO_ESP8266_USART)); // enable interrupt to send bytes
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usart_enable_tx_interrupt(USART(RADIO_ESP8266_USART)); // enable interrupt to send bytes
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@ -90,18 +90,18 @@ void radio_esp8266_setup(void)
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radio_esp8266_activity = false;
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radio_esp8266_activity = false;
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radio_esp8266_success = false;
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radio_esp8266_success = false;
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radio_esp8266_transmit((uint8_t*)"AT\r\n",4); // verify if module is present
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radio_esp8266_transmit((uint8_t*)"AT\r\n", 4); // verify if module is present
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while (!radio_esp8266_activity || !radio_esp8266_success) { // wait for response
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while (!radio_esp8266_activity || !radio_esp8266_success) { // wait for response
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__WFI(); // sleep until something happened
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__WFI(); // sleep until something happened
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}
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}
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radio_esp8266_transmit((uint8_t*)"AT+RST\r\n",8); // reset module
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radio_esp8266_transmit((uint8_t*)"AT+RST\r\n", 8); // reset module
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while (!radio_esp8266_activity || !radio_esp8266_success) { // wait for response
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while (!radio_esp8266_activity || !radio_esp8266_success) { // wait for response
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__WFI(); // sleep until something happened
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__WFI(); // sleep until something happened
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}
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}
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while(rx_used<13 || memcmp((char*)&rx_buffer[rx_used-13], "WIFI GOT IP\r\n", 13)!=0) { // wait to have IP
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while(rx_used < 13 || memcmp((char*)&rx_buffer[rx_used - 13], "WIFI GOT IP\r\n", 13) != 0) { // wait to have IP
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__WFI(); // sleep until something happened
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__WFI(); // sleep until something happened
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}
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}
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radio_esp8266_transmit((uint8_t*)"ATE0\r\n",6); // disable echoing
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radio_esp8266_transmit((uint8_t*)"ATE0\r\n", 6); // disable echoing
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while (!radio_esp8266_activity || !radio_esp8266_success) { // wait for response
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while (!radio_esp8266_activity || !radio_esp8266_success) { // wait for response
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__WFI(); // sleep until something happened
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__WFI(); // sleep until something happened
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}
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}
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@ -111,16 +111,16 @@ void radio_esp8266_tcp_open(char* host, uint16_t port)
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{
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{
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char command[256] = {0}; // string to create command
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char command[256] = {0}; // string to create command
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int length = snprintf(command, LENGTH(command), "AT+CIPSTART=\"TCP\",\"%s\",%u\r\n", host, port); // create AT command to establish a TCP connection
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int length = snprintf(command, LENGTH(command), "AT+CIPSTART=\"TCP\",\"%s\",%u\r\n", host, port); // create AT command to establish a TCP connection
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if (length>0) {
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if (length > 0) {
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radio_esp8266_transmit((uint8_t*)command, length);
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radio_esp8266_transmit((uint8_t*)command, length);
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}
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}
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}
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}
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void radio_esp8266_send(uint8_t* data, uint8_t length)
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void radio_esp8266_send(uint8_t* data, uint8_t length)
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{
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{
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char command[16+1] = {0}; // string to create command
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char command[16 + 1] = {0}; // string to create command
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int command_length = snprintf(command, LENGTH(command), "AT+CIPSEND=%u\r\n", length); // create AT command to send data
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int command_length = snprintf(command, LENGTH(command), "AT+CIPSEND=%u\r\n", length); // create AT command to send data
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if (command_length>0) {
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if (command_length > 0) {
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radio_esp8266_transmit((uint8_t*)command, command_length); // transmit AT command
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radio_esp8266_transmit((uint8_t*)command, command_length); // transmit AT command
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while (!radio_esp8266_activity || !radio_esp8266_success) { // wait for response
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while (!radio_esp8266_activity || !radio_esp8266_success) { // wait for response
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__WFI(); // sleep until something happened
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__WFI(); // sleep until something happened
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@ -140,26 +140,26 @@ void radio_esp8266_close(void)
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/** USART interrupt service routine called when data has been transmitted or received */
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/** USART interrupt service routine called when data has been transmitted or received */
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void USART_ISR(RADIO_ESP8266_USART)(void)
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void USART_ISR(RADIO_ESP8266_USART)(void)
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{
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{
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if (usart_get_interrupt_source(USART(RADIO_ESP8266_USART), USART_SR_TXE)) { // data has been transmitted
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if (usart_get_flag(USART(RADIO_ESP8266_USART), USART_SR_TXE)) { // data has been transmitted
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if (tx_used) { // there is still data in the buffer to transmit
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if (tx_used) { // there is still data in the buffer to transmit
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usart_send(USART(RADIO_ESP8266_USART),tx_buffer[tx_used-1]); // put data in transmit register
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usart_send(USART(RADIO_ESP8266_USART), tx_buffer[tx_used - 1]); // put data in transmit register
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tx_used--; // update used size
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tx_used--; // update used size
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} else { // no data in the buffer to transmit
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} else { // no data in the buffer to transmit
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usart_disable_tx_interrupt(USART(RADIO_ESP8266_USART)); // disable transmit interrupt
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usart_disable_tx_interrupt(USART(RADIO_ESP8266_USART)); // disable transmit interrupt
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}
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}
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}
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}
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if (usart_get_interrupt_source(USART(RADIO_ESP8266_USART), USART_SR_RXNE)) { // data has been received
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if (usart_get_flag(USART(RADIO_ESP8266_USART), USART_SR_RXNE)) { // data has been received
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while (rx_used>=LENGTH(rx_buffer)) { // if buffer is full
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while (rx_used >= LENGTH(rx_buffer)) { // if buffer is full
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memmove(rx_buffer,&rx_buffer[1],LENGTH(rx_buffer)-1); // drop old data to make space (ring buffer are more efficient but harder to handle)
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memmove(rx_buffer, &rx_buffer[1], LENGTH(rx_buffer) - 1); // drop old data to make space (ring buffer are more efficient but harder to handle)
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rx_used--; // update used buffer information
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rx_used--; // update used buffer information
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}
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}
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rx_buffer[rx_used++] = usart_recv(USART(RADIO_ESP8266_USART)); // put character in buffer
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rx_buffer[rx_used++] = usart_recv(USART(RADIO_ESP8266_USART)); // put character in buffer
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// if the used send a packet with these strings during the commands detection the AT command response will break (AT commands are hard to handle perfectly)
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// if the used send a packet with these strings during the commands detection the AT command response will break (AT commands are hard to handle perfectly)
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if (rx_used>=4 && memcmp((char*)&rx_buffer[rx_used-4], "OK\r\n", 4)==0) { // OK received
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if (rx_used >= 4 && memcmp((char*)&rx_buffer[rx_used - 4], "OK\r\n", 4) == 0) { // OK received
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radio_esp8266_activity = true; // response received
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radio_esp8266_activity = true; // response received
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radio_esp8266_success = true; // command succeeded
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radio_esp8266_success = true; // command succeeded
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rx_used = 0; // reset buffer
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rx_used = 0; // reset buffer
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} else if (rx_used>=7 && memcmp((char*)&rx_buffer[rx_used-7], "ERROR\r\n", 7)==0) { // ERROR received
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} else if (rx_used >= 7 && memcmp((char*)&rx_buffer[rx_used - 7], "ERROR\r\n", 7) == 0) { // ERROR received
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radio_esp8266_activity = true; // response received
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radio_esp8266_activity = true; // response received
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radio_esp8266_success = false; // command failed
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radio_esp8266_success = false; // command failed
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rx_used = 0; // reset buffer
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rx_used = 0; // reset buffer
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