Gorazd Kovacic / Mbed OS stm32f7-tecos

simulate data accoridng to #21

main.cpp@45:092347ceac92, 2019-05-27 (annotated)

Committer:
gorazdko
Date:
Mon May 27 09:18:47 2019 +0000
Revision:
45:092347ceac92
Parent:
44:3b8a8dba7998 
fix size of samples

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Jonathan Austin 3:2757d7abb7d9 1 #include "mbed.h"
Jonathan Austin 3:2757d7abb7d9 2
gorazdko 43:c179810e1a75 3
gorazdko 43:c179810e1a75 4
gorazdko 43:c179810e1a75 5 #define TYPE_MEASEUREMENT 0xA
gorazdko 43:c179810e1a75 6
gorazdko 43:c179810e1a75 7
gorazdko 43:c179810e1a75 8 #define ST_TX D1
gorazdko 43:c179810e1a75 9 #define ST_RX D0
gorazdko 43:c179810e1a75 10 #define RTS D15
gorazdko 43:c179810e1a75 11
gorazdko 43:c179810e1a75 12
gorazdko 43:c179810e1a75 13
Jonathan Austin 3:2757d7abb7d9 14 DigitalOut led1(LED1);
gorazdko 43:c179810e1a75 15 Serial pc(USBTX, USBRX, NULL, 115200); // tx, rx
gorazdko 43:c179810e1a75 16 DigitalIn pin_rts(RTS);
gorazdko 43:c179810e1a75 17 DigitalIn button(USER_BUTTON);
gorazdko 43:c179810e1a75 18 Serial st_uart(ST_TX, ST_RX, NULL, 115200); // tx, rx
Jonathan Austin 3:2757d7abb7d9 19
gorazdko 43:c179810e1a75 20
gorazdko 43:c179810e1a75 21
gorazdko 43:c179810e1a75 22 uint8_t test_vector[10000];
gorazdko 43:c179810e1a75 23
gorazdko 43:c179810e1a75 24
gorazdko 43:c179810e1a75 25 void uart_busy_check(void)
gorazdko 43:c179810e1a75 26 {
gorazdko 43:c179810e1a75 27 while (pin_rts == 0)
gorazdko 43:c179810e1a75 28 {
gorazdko 43:c179810e1a75 29 // do nothing
gorazdko 43:c179810e1a75 30 led1=0;
gorazdko 43:c179810e1a75 31 }
gorazdko 43:c179810e1a75 32 }
gorazdko 43:c179810e1a75 33
gorazdko 43:c179810e1a75 34
gorazdko 43:c179810e1a75 35 void write_sample(uint16_t sample)
gorazdko 43:c179810e1a75 36 {
gorazdko 43:c179810e1a75 37 led1=1;
gorazdko 43:c179810e1a75 38
gorazdko 43:c179810e1a75 39 uint8_t byte_little = ((uint8_t *)&sample)[0];
gorazdko 43:c179810e1a75 40 uint8_t byte_big = ((uint8_t *)&sample)[1];
gorazdko 43:c179810e1a75 41
gorazdko 43:c179810e1a75 42 st_uart.putc(byte_little);
gorazdko 43:c179810e1a75 43 st_uart.putc(byte_big);
gorazdko 43:c179810e1a75 44
gorazdko 43:c179810e1a75 45 uart_busy_check();
gorazdko 43:c179810e1a75 46 }
gorazdko 43:c179810e1a75 47
Jonathan Austin 3:2757d7abb7d9 48 int main() {
gorazdko 43:c179810e1a75 49
gorazdko 43:c179810e1a75 50 led1=1;
gorazdko 43:c179810e1a75 51 pc.printf("About to simulate data over the second uart D1 (Tx), D0 (Rx) - **Press button**... \n\r");
gorazdko 43:c179810e1a75 52
gorazdko 43:c179810e1a75 53 while (!button)
gorazdko 43:c179810e1a75 54 {
gorazdko 43:c179810e1a75 55
gorazdko 43:c179810e1a75 56 }
gorazdko 43:c179810e1a75 57
gorazdko 43:c179810e1a75 58 pc.printf("Button pressed! Starting...");
gorazdko 43:c179810e1a75 59
gorazdko 43:c179810e1a75 60 while(1)
gorazdko 43:c179810e1a75 61 {
gorazdko 43:c179810e1a75 62
gorazdko 43:c179810e1a75 63 /* simulate data */
gorazdko 44:3b8a8dba7998 64 for (uint16_t i=0; i<10; i++)
gorazdko 43:c179810e1a75 65 {
gorazdko 43:c179810e1a75 66 st_uart.putc(TYPE_MEASEUREMENT);
gorazdko 43:c179810e1a75 67 st_uart.putc(0x00); /* CRC */
gorazdko 44:3b8a8dba7998 68
gorazdko 44:3b8a8dba7998 69 if (i<9)
gorazdko 44:3b8a8dba7998 70 st_uart.putc(i); /* INDEX (incrementing) */
gorazdko 44:3b8a8dba7998 71 else
gorazdko 44:3b8a8dba7998 72 st_uart.putc(255); /* end of measurement 255 (0xff) */
gorazdko 44:3b8a8dba7998 73
gorazdko 45:092347ceac92 74 /* SIZE OF SAMPLES 5000 == 10000 bytes */
gorazdko 45:092347ceac92 75 uint16_t size_of_samples = 5000;
gorazdko 45:092347ceac92 76 uint8_t byte_little = ((uint8_t *)&size_of_samples)[0];
gorazdko 45:092347ceac92 77 uint8_t byte_big = ((uint8_t *)&size_of_samples)[1];
gorazdko 45:092347ceac92 78 st_uart.putc(byte_little);
gorazdko 45:092347ceac92 79 st_uart.putc(byte_big);
gorazdko 43:c179810e1a75 80
gorazdko 43:c179810e1a75 81 for (int i=0; i<5000; i++)
gorazdko 43:c179810e1a75 82 {
gorazdko 43:c179810e1a75 83 write_sample(i);
gorazdko 43:c179810e1a75 84 }
gorazdko 43:c179810e1a75 85
gorazdko 43:c179810e1a75 86 }
gorazdko 43:c179810e1a75 87
Jonathan Austin 3:2757d7abb7d9 88 }
Jonathan Austin 3:2757d7abb7d9 89 }