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esp8266: make received data available

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This commit is contained in:
King Kévin 2022-07-14 18:56:56 +02:00
parent 462a65cb92
commit 24cec3850d
2 changed files with 25 additions and 1 deletions
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22
lib/radio_esp8266.c
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@ -32,13 +32,15 @@
/** @} */
/* input and output buffers and used memory */
static uint8_t rx_buffer[24] = {0}; /**< buffer for received data (we only expect AT responses) */
static uint8_t rx_buffer[24 + 530] = {0}; /**< buffer for received data */
static volatile uint16_t rx_used = 0; /**< number of byte in receive buffer */
static uint8_t tx_buffer[256] = {0}; /**< buffer for data to transmit */
static volatile uint16_t tx_used = 0; /**< number of bytes used in transmit buffer */
volatile bool radio_esp8266_activity = false;
volatile bool radio_esp8266_success = false;
uint8_t radio_esp8266_received[512 + 18];
uint16_t radio_esp8266_received_len = 0;
/** transmit data to radio
* @param[in] data data to transmit
@ -180,6 +182,24 @@ void USART_ISR(RADIO_ESP8266_USART)(void)
radio_esp8266_activity = true; // response received
radio_esp8266_success = false; // command failed
rx_used = 0; // reset buffer
} else if (rx_used >= 7 && memcmp((char*)&rx_buffer[0], "\r\n+IPD,", 7) == 0) { // IP data being received
// find if we received the length
int32_t data_length = 0;
uint32_t data_start = 0;
for (uint16_t i = 7; i < rx_used; i++) {
if (':' == rx_buffer[i]) {
data_start = i + 1;
data_length = atoi((char*)&rx_buffer[7]);
break;
}
}
if (data_length > 0 && rx_used >= data_start + data_length) {
if ((uint32_t)data_length <= LENGTH(radio_esp8266_received)) {
memcpy(radio_esp8266_received, &rx_buffer[data_start], data_length);
radio_esp8266_received_len = data_length;
}
rx_used = 0; // reset buffer
}
}
}
}

4
lib/radio_esp8266.h
View File

@ -11,6 +11,10 @@
extern volatile bool radio_esp8266_activity;
/** the last command has succeeded */
extern volatile bool radio_esp8266_success;
/** data received (overwritten upon next receive) */
extern uint8_t radio_esp8266_received[];
/** length of receive data */
extern uint16_t radio_esp8266_received_len;
/** setup peripherals to communicate with radio
* @note this is blocking to ensure we are connected to the WiFi network