Revision 0:e900ae985f87, committed 2021-06-06

Comitter:

diogonac

Date:

Sun Jun 06 15:29:51 2021 +0000

Commit message:

APS4 - DAC R-2R de 8-bit

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Jun 06 15:29:51 2021 +0000
@@ -0,0 +1,98 @@
+#include "mbed.h"
+
+Serial pc (D1, D0); //Comunicação com USB
+
+BusOut saida(D4, D5, D6, D7, D8, D9, D10, D11); //Barramento dos bits do DAC R-@R
+
+InterruptIn troca_onda(PC_13); //Declara o botão do usuário para troca de sinal
+
+int senoide [] = {0x80,0x83,0x86,0x89,0x8c,0x8f,0x92,0x95, 
+0x98,0x9b,0x9e,0xa2,0xa5,0xa7,0xaa,0xad,
+0xb0,0xb3,0xb6,0xb9,0xbc,0xbe,0xc1,0xc4,
+0xc6,0xc9,0xcb,0xce,0xd0,0xd3,0xd5,0xd7,
+0xda,0xdc,0xde,0xe0,0xe2,0xe4,0xe6,0xe8,
+0xea,0xeb,0xed,0xee,0xf0,0xf1,0xf3,0xf4,
+0xf5,0xf6,0xf8,0xf9,0xfa,0xfa,0xfb,0xfc,
+0xfd,0xfd,0xfe,0xfe,0xfe,0xff,0xff,0xff,
+0xff,0xff,0xff,0xff,0xfe,0xfe,0xfe,0xfd,
+0xfd,0xfc,0xfb,0xfa,0xfa,0xf9,0xf8,0xf6,
+0xf5,0xf4,0xf3,0xf1,0xf0,0xee,0xed,0xeb,
+0xea,0xe8,0xe6,0xe4,0xe2,0xe0,0xde,0xdc,
+0xda,0xd7,0xd5,0xd3,0xd0,0xce,0xcb,0xc9,
+0xc6,0xc4,0xc1,0xbe,0xbc,0xb9,0xb6,0xb3,
+0xb0,0xad,0xaa,0xa7,0xa5,0xa2,0x9e,0x9b,
+0x98,0x95,0x92,0x8f,0x8c,0x89,0x86,0x83,
+0x80,0x7c,0x79,0x76,0x73,0x70,0x6d,0x6a,
+0x67,0x64,0x61,0x5d,0x5a,0x58,0x55,0x52,
+0x4f,0x4c,0x49,0x46,0x43,0x41,0x3e,0x3b,
+0x39,0x36,0x34,0x31,0x2f,0x2c,0x2a,0x28,
+0x25,0x23,0x21,0x1f,0x1d,0x1b,0x19,0x17,
+0x15,0x14,0x12,0x11,0xf,0xe,0xc,0xb,
+0xa,0x9,0x7,0x6,0x5,0x5,0x4,0x3,
+0x2,0x2,0x1,0x1,0x1,0x0,0x0,0x0,
+0x0,0x0,0x0,0x0,0x1,0x1,0x1,0x2,
+0x2,0x3,0x4,0x5,0x5,0x6,0x7,0x9,
+0xa,0xb,0xc,0xe,0xf,0x11,0x12,0x14,
+0x15,0x17,0x19,0x1b,0x1d,0x1f,0x21,0x23,
+0x25,0x28,0x2a,0x2c,0x2f,0x31,0x34,0x36,
+0x39,0x3b,0x3e,0x41,0x43,0x46,0x49,0x4c,
+0x4f,0x52,0x55,0x58,0x5a,0x5d,0x61,0x64,
+0x67,0x6a,0x6d,0x70,0x73,0x76,0x79,0x7c}; //Look Up table para gerar um sinal senoidal 
+
+int i, cont;
+
+void rotina_troca_onda(void); //Rotina para trocar o sinal exibido
+
+void rotina_rampa(void); //Rotina para gerar um sinal de uma rampa 
+void rotina_triangular(void); //Rotina para gerar um sinal triangular 
+void rotina_senoidal(void); //Rotina para gerar um sinal de uma senoide 
+
+int main()
+{
+    pc.baud(115200); //Define a velocidade da porta USB
+    
+    troca_onda.fall(&rotina_troca_onda); //Define quando o botão vai ser detectado
+
+    while(1) {
+
+        if(cont == 0)rotina_rampa();
+        if(cont == 1)rotina_triangular();
+        if(cont == 2)rotina_senoidal();
+        if(cont >= 3) cont = 0;
+
+    }
+}
+
+void rotina_troca_onda()
+{
+    cont ++;
+}
+
+void rotina_rampa()
+{
+    for(i = 0; i <= 255; i++) {
+        saida = i;
+        wait(0.001);
+    }
+}
+
+void rotina_triangular()
+{
+    for(i = 0; i <= 255; i++) {
+        saida = i;
+        wait(0.001);
+    }
+
+    for(i = 255; i > -1; i--) {
+        saida = i;
+        wait(0.001);
+    }
+}
+
+void rotina_senoidal()
+{
+    for(i = 0; i <= 255; i++) {        
+        saida = senoide[i];
+        wait(0.001);
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sun Jun 06 15:29:51 2021 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400
\ No newline at end of file