How to do a high price / performance signal generator?

To engage in DIY, there is a source of signaling. Why buy the merchandise instrument, the price is worth it, so it is necessary to do a high price / high signal generator. You can issue -2.5V ~ + 2.5V, adjustable offset output 0.6-5V. The signal of 1 Hz-10 MHz, but 3M later wavy varum, the actual range is only 1 Hz-3MHz. The board directly took 6 pieces of exactly the same, a square, when it was a square. The process is omitted, the following is the schematic and source code, I hope everyone likes ~ Schematic Main source code segment #include "Anjian.h" #include "intrins.h" bit zisuo; u8 chufa; u8 zijia; u8 Anjian19 (void) // button 0-9 {unsigned char A = 0; p3 & = 0xE3; // keyboard initial : Value value = 0, column value = 1 p3 | = 0xE0; //p3.234=0 P3.567 = 1 _nop_(); // buffer, to be IO port potential stable A = P3 & 0xE0; // Get row flag to get P3.567 potential P3 & = 0x1f; // flip keyboard interface output P3 | = 0x1c; //p3.234=1 p3.567 = 0 _nop_(); a | = (p3 & 0x1c); // Column flag + row flag Return A "" 2; // Return key value Return P3.234567 } u8 Anjian1015 (void) // button 10-15 {UNSIGNED CHAR A = 0; P1 & = 0xE7; // Keyboard Initial: Value = 0, column value = 1 p1 | = 0xE0; //p1.34=0 p1.567 = 1 _nop_(); // buffer, to wait for IO port potential stable A = P1 & 0xE0; // Get row flag to get P1.567 potential P1 & = 0x1f; // flip keyboard interface output P1 | = 0x18; //p1.34=1 p1.567 = 0 _nop_(); A | = P1 & 0x18); // Column flag + row flag RETURN A "" 3; // Return key value return P1.34567} u8 Anjian1617 (void) {return p2} void Anjian (void) {u8 a = Anjian19 (); u8 b = Anjian1015 (); u8 c = Anjian1617 (); if (a == 0x3f && b == 0x1f && c = = 3) {zijia = 0; zisuo = 0;} else if (zisuo == 0) { Zijia ++; zijia "Duanjishi) {zijia = 0; ZISUO = 1; Switch (a) {case 0x36: chufa = 1; break; cas 0x35: chufa = 2; break; case 0x33: chufa = 3; Break; Case 0x2e: chufa = 4; breaf; case 0x2d: chufa = 5; break; case 0x2b: chufa = 6; break; case 0x1e: chufa = 7; break; case 0x1d: chufa = 8; Break; Case 0x1b: chufa = 9 . ;; Switch (c) {casse 1: chufa = 17; Break; Case 2: chufa = 10; Break; default: Break;} switch (b) Original title: Niu people DIY signal generator: 1Hz ~ 10MHz, cost-effective Article Source: [WeChat public number: embedded ARM] Welcome to add attention! Please indicate the source of the article. Editor: haq, read full text, original title: cattle own DIY signal generator: 1Hz ~ 10MHz, cost-effective Article Source: [Micro Signal: GH_C472C2199C88, WeChat public number: embedded ARM] Welcome to add attention! Please indicate the source of the article.

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