HelloWorld_IDS01A4 mbed application for Spirit1 P2P demo.
Dependencies: mbed
Fork of HelloWorld_IDS01A5_Program by
mbed 2.0 (a.k.a classic) HelloWorld example for Spirit1 to transfer data from one node to another.
To send the predefined data packet from the sender to the receiver, user needs to press User Button on the board. The LED on the receiver expansion board will toggle on reception of data successfully.
Data packets sent and received can be seen on USB serial terminal.
EVALUATION BOARDS RF FREQUENCY DESCRIPTION :
X-NUCLEO-IDS01A4 868 MHz 868 MHz RF expansion board based on SPIRIT1
Diff: main.cpp
- Revision:
- 1:cf2e2f85bf8d
- Parent:
- 0:2ddc0583bcec
- Child:
- 2:a0677b17a570
--- a/main.cpp Thu May 25 16:38:55 2017 +0000 +++ b/main.cpp Mon Jun 19 08:23:08 2017 +0000 @@ -4,7 +4,7 @@ * @author Rosarium PILA, STMicroelectronics * @version V1.0.0 * @date May 17th, 2017 - * @brief mbed HelloWorld P2P example for the STMicroelectronics X-NUCLEO-IDB01A4/5 + * @brief mbed Hello World test application for the STMicroelectronics X-NUCLEO-IDB01A4/5 * Spirit1 Expansion Board ****************************************************************************** * @attention @@ -39,69 +39,61 @@ #include "mbed.h" #include "SimpleSpirit1.h" -#define TEST_STR_LEN (32) //512 +#define TEST_STR_LEN (32) static uint8_t send_buf[TEST_STR_LEN] ={'S','P','I','R','I','T','1',' ','H','E','L','L','O',' ','W','O','R','L','D',' ','P','2','P',' ','D','E','M','O'}; static uint8_t read_buf[TEST_STR_LEN] ={'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; - -#define PCKT_MARGIN (2) //32 + +static SimpleSpirit1 &myspirit = SimpleSpirit1::CreateInstance(D11, D12, D3, D9, D10, D2); //RPi: (SPI_CLK) = (D13:PA5:resistorR7 --> D3:PB3:resistorR4) -//#define SIGNAL_BIT (0x1) //RPi //Removed OS dependency for mbed classic -//static osThreadId main_thread_id; //RPi //Removed OS dependency for mbed classic +volatile bool rx_done_flag = 0; +volatile bool tx_done_flag = 0; - -static SimpleSpirit1 &myspirit = SimpleSpirit1::CreateInstance(D11, D12, D3, D9, D10, D2); //RPi -bool SIGNAL_BIT = 0; //RPi static int curr_len = 0; unsigned char myValue = 0; -InterruptIn event(USER_BUTTON); //RPi //Added interrupt event to give userinterface to send pkt. +InterruptIn event(USER_BUTTON); //RPi : //Added interrupt event to give userinterface to send pkt. +/** + * @brief callback_func + * @param callback event + * @retval None. + */ static void callback_func(int event) { - if(event == SimpleSpirit1::RX_DONE) { -// osSignalSet(main_thread_id, SIGNAL_BIT); //RPi //Removed OS dependency for mbed classic - SIGNAL_BIT = 1; - } else if (event != SimpleSpirit1::TX_DONE) { - printf("Got unexpected event %d\r\n", event); - } else { - printf("TX done!\n\r\n"); - } + if(event == SimpleSpirit1::RX_DONE) + { + rx_done_flag = 1; + } + else if (event == SimpleSpirit1::TX_DONE) + { + tx_done_flag = 1; + } } + +/** + * @brief send_data + * @param None + * @retval None + */ void send_data(void) -{ - int cnt = 0; - cnt++; - if(cnt >= MAX_PACKET_LEN) cnt = 0; +{ + printf("\r\n***Sending a packet***\r\n"); - printf("\r\n***Sending a packet***\r\nSent string ='%s' (len=%d)\n\r", send_buf, strlen((const char*)send_buf) + 1); - - uint32_t before_cca = us_ticker_read(); while(myspirit.is_receiving()); // wait for ongoing RX ends - uint32_t after_cca = us_ticker_read(); - + curr_len = strlen((const char*)send_buf) + 1; myspirit.send(send_buf, curr_len); - uint32_t after_send = us_ticker_read(); - - printf("CCA time: %uus\n", (unsigned int)(after_cca - before_cca)); - printf("Send time: %uus\n\r", (unsigned int)(after_send - after_cca)); } - +/** + * @brief main routine + * @param None + * @retval int + */ int main() -{ - // osStatus ret; //RPi //Removed OS dependency for mbed classic - - unsigned int pckts_fails = 0; - unsigned int first_failed_packet = 0; - unsigned int last_failed_packet = 0; - int validate_cnt = -1; - - // main_thread_id = Thread::gettid(); //RPi //Removed OS dependency for mbed classic - - - DigitalOut TestLED = D5; //RPi //LED of IDS01A4/5 - TestLED = 0; //RPi //LED off +{ + DigitalOut TestLED = D5; //RPi //LED of IDS01A4/5 + TestLED = 0; //RPi //LED off myspirit.attach_irq_callback(callback_func); @@ -110,48 +102,35 @@ printf("\n**************HelloWorld mbed demo for Spirit1 (X-NUCLEO-IDS01A4/5)**************\r\n"); printf("\nPress User Button on one of the two boards to send a packaet to the other and the LED D1 on the receiver X-NUCLEO-IDS01A4/5 should toggle \n\r\n"); + event.rise(&send_data); //RPi: User button interrupt trigger to send data + while(1) { - - event.rise(&send_data); //RPi // Added User button interrupt trigger to send data + __WFE(); // low power in idle condition., waiting for an event - if(SIGNAL_BIT) //RPi //Data pkt received + if(rx_done_flag) { - SIGNAL_BIT = 0; - - for(unsigned int flush_count = 0; flush_count < TEST_STR_LEN; flush_count++) read_buf[flush_count] = 0 ;//RPi//clear the read buffer + rx_done_flag = 0; + + for(unsigned int flush_count = 0; flush_count < TEST_STR_LEN; flush_count++) read_buf[flush_count] = 0 ;//RPi:clear the read buffer int ret = myspirit.read(read_buf, sizeof(read_buf)); - myValue = 1 - myValue; //RPi //Toggle LED at the receiver - TestLED = myValue; //RPi //Toggle LED at the receiver + myValue = 1 - myValue; + TestLED = myValue; //RPi: Toggle LED at the receiver if(ret == 0) { printf("\nNothing to read\n\r"); continue; } - int len = strlen((const char*)read_buf) + 1; - if(validate_cnt < 0) { - validate_cnt = ret; - } else { - validate_cnt++; - if(validate_cnt > MAX_PACKET_LEN) validate_cnt = 1; - } - - if(ret != len) { - pckts_fails++; - if((ret > (int)(first_failed_packet + PCKT_MARGIN) || (ret < (int)(first_failed_packet - PCKT_MARGIN)))) { - first_failed_packet = ret; - } - last_failed_packet = ret; - } - printf("\r\n***Received a packet***\r\n\rReceived string = '%s' (len=%d) \n\r", read_buf, ret); - printf("RSSI: %f, LQI: %u\r\n", myspirit.get_last_rssi_dbm(), (unsigned int)myspirit.get_last_sqi()); - printf("Packets failed:\t%d\t(ff=%d, lf=%d)\r\n", pckts_fails, first_failed_packet, last_failed_packet); - - while(myspirit.is_receiving()); // wait for ongoing RX ends - } + } + + else if (tx_done_flag) + { + tx_done_flag = 0; + printf("\r\n***Packet sent***\r\nSent string ='%s' (len=%d)\n\r", send_buf, strlen((const char*)send_buf) + 1); + } } myspirit.off();