Jovan Ivković / Mbed 2 deprecated Nucleo_bitbanging_portsD5-D7led

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Dependencies:   mbed

main.cpp@7:13ae8d34cc97, 2017-01-04 (annotated)

Committer:
JovanEps
Date:
Wed Jan 04 15:12:43 2017 +0000
Revision:
7:13ae8d34cc97
Parent:
6:64a3bea8be86
Child:
8:3af851c7bb8d
Final version of bit-banging speed test 1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 0:005629fe3609 1 #include "mbed.h"
JovanEps 6:64a3bea8be86 2 //********************************************************
JovanEps 6:64a3bea8be86 3 //** Nucleo-144 Stm32F746 and Stm32F767 bitbanging ******
JovanEps 7:13ae8d34cc97 4 //** Port setting and pattern generation ******
JovanEps 7:13ae8d34cc97 5 //** Speed - Benchmark ******
JovanEps 7:13ae8d34cc97 6 //** Jovan Ivković - 2016. ******
JovanEps 7:13ae8d34cc97 7 //** JovanEps (jovan.eps@gmail.com). ******
JovanEps 6:64a3bea8be86 8 //********************************************************
JovanEps 7:13ae8d34cc97 9
screamer 0:005629fe3609 10 DigitalOut myled(LED1);
JovanEps 5:64511b302803 11 DigitalOut PD7(PF_13);
JovanEps 7:13ae8d34cc97 12 DigitalOut PD5(PE_11); //introduce D5 pin-out it ping faster :)
JovanEps 6:64a3bea8be86 13 DigitalOut PD13(PA_5); //introduce D13 pin-out
JovanEps 6:64a3bea8be86 14 Serial pc(USBTX, USBRX);
JovanEps 7:13ae8d34cc97 15 Timer timer;
screamer 0:005629fe3609 16
JovanEps 7:13ae8d34cc97 17 void Pinging()
JovanEps 7:13ae8d34cc97 18 {
JovanEps 7:13ae8d34cc97 19 int vreme = 0;
JovanEps 7:13ae8d34cc97 20 while(1) {
JovanEps 7:13ae8d34cc97 21 // Pattern and port setting speed benchmark
JovanEps 7:13ae8d34cc97 22 timer.start();
JovanEps 7:13ae8d34cc97 23 vreme = timer.read_us();
JovanEps 7:13ae8d34cc97 24 for(int ii=0, ii<99, ii+) {
JovanEps 7:13ae8d34cc97 25 PD5 = 1; // D5 go low 1 go LOW in next 74..75ns
JovanEps 7:13ae8d34cc97 26 PD5 = 1; // D5 go low 2
JovanEps 7:13ae8d34cc97 27 PD5 = 1; // D5 go low 3
JovanEps 7:13ae8d34cc97 28 PD5 = 0; // D5 go inv-high on SN74vhc14 - >1.6..2.4V < 1.75ns
JovanEps 7:13ae8d34cc97 29 PD5 = 1; // D5 go low 5
JovanEps 7:13ae8d34cc97 30 PD5 = 1; // D5 go low 6
JovanEps 7:13ae8d34cc97 31 PD5 = 1; // D5 go low 7
JovanEps 7:13ae8d34cc97 32 PD5 = 1; // D5 go low 8
JovanEps 7:13ae8d34cc97 33 PD5 = 1; // D5 go low 9
JovanEps 7:13ae8d34cc97 34 PD5 = 1; // D5 go low 10
JovanEps 7:13ae8d34cc97 35 }
JovanEps 7:13ae8d34cc97 36 vreme = timer.read_us() - vreme;
JovanEps 7:13ae8d34cc97 37 wait_us(0.2);
JovanEps 7:13ae8d34cc97 38 pc.printf("Circle time... %4.4f \n", ( float ) vreme / 1000 ); //1k sets of PD5
JovanEps 7:13ae8d34cc97 39 pc.printf("\n\n");
JovanEps 7:13ae8d34cc97 40 timer.stop();
JovanEps 7:13ae8d34cc97 41
JovanEps 7:13ae8d34cc97 42 /* // Alternative
JovanEps 7:13ae8d34cc97 43 while(1) {
JovanEps 6:64a3bea8be86 44 PD5 = 0; // D5 go low 1
JovanEps 6:64a3bea8be86 45 PD5 = 0; // D5 go low 2
JovanEps 6:64a3bea8be86 46 PD5 = 0; // D5 go low 3
JovanEps 7:13ae8d34cc97 47 PD5 = 1; // D5 go inv-low on 74vhc14 - <0.6v..0.9V < 1.6ns
JovanEps 6:64a3bea8be86 48 PD5 = 0; // D5 go low 5
JovanEps 6:64a3bea8be86 49 PD5 = 0; // D5 go low 6
JovanEps 6:64a3bea8be86 50 PD5 = 0; // D5 go low 7
JovanEps 6:64a3bea8be86 51 PD5 = 0; // D5 go low 8
JovanEps 6:64a3bea8be86 52 PD5 = 0; // D5 go low 9
JovanEps 6:64a3bea8be86 53 PD5 = 0; // D5 go low 10
JovanEps 7:13ae8d34cc97 54 wait_us(0.3);
JovanEps 7:13ae8d34cc97 55 */
JovanEps 7:13ae8d34cc97 56 //pc.printf("\n");
JovanEps 6:64a3bea8be86 57 }
JovanEps 7:13ae8d34cc97 58 }
JovanEps 7:13ae8d34cc97 59
JovanEps 7:13ae8d34cc97 60 int main()
JovanEps 7:13ae8d34cc97 61 {
JovanEps 5:64511b302803 62 myled = 1; // LED is ON - working
JovanEps 6:64a3bea8be86 63 pc.baud(115200);
JovanEps 7:13ae8d34cc97 64 //pc.baud(921600); // Max garanted UART/seriall speed
JovanEps 7:13ae8d34cc97 65 pc.printf("Starting...\n");
JovanEps 7:13ae8d34cc97 66 wait(0.2); // 200 ms
JovanEps 7:13ae8d34cc97 67
JovanEps 7:13ae8d34cc97 68 //NVIC_DisableIRQ(XXX); // Disable NVIC interrupt;
JovanEps 7:13ae8d34cc97 69 Pinging(); //Call of Pinging methode
JovanEps 6:64a3bea8be86 70
JovanEps 6:64a3bea8be86 71 /*
screamer 0:005629fe3609 72 while(1) {
JovanEps 7:13ae8d34cc97 73 // PD7 = 1; // D7 go high in ~75ns
JovanEps 7:13ae8d34cc97 74 //PD13 = 1; // D13 go high has delay of
JovanEps 6:64a3bea8be86 75 // myled = 1;
JovanEps 7:13ae8d34cc97 76
JovanEps 6:64a3bea8be86 77 PD5 = 0; // D5 go high
JovanEps 6:64a3bea8be86 78 //wait(0); // 1ns - exclude, we need as fast as we can get
JovanEps 6:64a3bea8be86 79 // PD7 = 0; // D7 go low in next 74ns
JovanEps 7:13ae8d34cc97 80 //PD13 = 0; // D13 go high
JovanEps 6:64a3bea8be86 81 // PD7 = 1;
JovanEps 6:64a3bea8be86 82 //PD13 = 1; // D13 go high
JovanEps 6:64a3bea8be86 83 PD5 = 0;
JovanEps 6:64a3bea8be86 84 // PD13 = 0; // D13 go high
JovanEps 6:64a3bea8be86 85 //myled = 0;
JovanEps 6:64a3bea8be86 86 PD5 = 0; // D5 go low
JovanEps 6:64a3bea8be86 87 PD5 = 1; // D5 go inv-high on 74vhc14 - 1v
JovanEps 6:64a3bea8be86 88 PD5 = 0; // D5 go low
JovanEps 6:64a3bea8be86 89 PD5 = 1; // D5 go inv-high on 74vhc14 -2v
JovanEps 6:64a3bea8be86 90 PD5 = 0; // D5 go low 2v
JovanEps 6:64a3bea8be86 91 PD5 = 1; // D5 go inv-high on 74vhc14 - 2v
JovanEps 6:64a3bea8be86 92 PD5 = 0; // D5 go low 2v
JovanEps 6:64a3bea8be86 93 PD5 = 1; // D5 go inv-high on 74vhc14 - 3v
JovanEps 6:64a3bea8be86 94 PD5 = 0; // D5 go low 3v
JovanEps 6:64a3bea8be86 95 //v4 111010101010101 4-low lead and 6-inv-peek
JovanEps 6:64a3bea8be86 96 PD5 = 1; // D5 go inv-high on 74vhc14 - 4v
JovanEps 6:64a3bea8be86 97 PD5 = 0; // D5 go low 4v
JovanEps 6:64a3bea8be86 98 PD5 = 1; // D5 go inv-high on 74vhc14 - 4v
JovanEps 6:64a3bea8be86 99 PD5 = 0; // D5 go low 4v
JovanEps 6:64a3bea8be86 100 //wait(0);// 1nsec - exclude, we need as fast as we can get
JovanEps 7:13ae8d34cc97 101
JovanEps 7:13ae8d34cc97 102 }
JovanEps 7:13ae8d34cc97 103 */
screamer 0:005629fe3609 104 }