使用HAL的DAC各种波形输出-----（一）

一花一世界003 · 2015-02-14T11:01:47+00:00

先是HAL大致驱动模块部件 3 w* e) }) {. O MAIN函数运行流程 8 F( d- j+ Y# {' O) }2 H; |$ g' `. W/ j{ / f! i7 D6 N( V. `4 qHAL_Init(); , |+ q2 s4 g; L' ]8 s0 { W. Z1 tSystemClock_Config();. f* Y2 x7 a2 v+ p+ w' o, g 6 l& G7 O/ y9 p! t" q 4 G# B6 V; [ [ /* Configures User push-button */: n6 u+ z) Q; }5 j3 J. D BSP_PB_Init(BUTTON_USER, BUTTON_MODE_EXTI); 0 @% Z6 w7 a1 y3 z8 @ * Q, M" K" P0 w; Q, d) L( S! M) I /*##-1- Configure the DAC peripheral #######################################*/ + d" D: Y4 U" x/ n5 b DacHandle.Instance = DACx; 3 G6 |. L3 M# ^) g) x : p" R& z6 @3 N( W! f9 U! ]2 r /*##-2- Configure the TIM peripheral #######################################*// f* h4 j0 H5 {6 d7 F) D h2 j TIM6_Config();& M u, D2 u5 d( o7 G# G ' q7 g& n* e* u /* Infinite loop */ ( x9 F$ ]2 H& z0 _! o: ~ while (1)5 l# F% T, G. H {1 A5 Z' h! B, l6 S- o /* If the Key is pressed */ & @0 O ?. u# `$ `7 { if (ubKeyPressed != RESET)( v' S7 v1 w5 ? {" ^7 i+ `) Q6 m4 o HAL_DAC_DeInit(&DacHandle);4 q' Q4 k4 m( a, n" ` 1 E/ w* L |" N9 L+ }1 x /* select waves forms according to the User push-button status */$ f/ l5 x: a j" I) R, h8 X if (ubSelectedWavesForm == 1)- _) [7 |" ~8 ~% T( F- R {接下来就是三角波产生的函数，2 j0 i/ {! M- S5 \9 ] /* The triangle wave has been selected */ 9 Y" |8 ~# y% f" P) T; I) h( j6 S8 _; b, X0 p0 a h /* Triangle Wave generator -------------------------------------------*/6 Q& [$ P% Z. s) G+ Q: Q DAC_Ch1_TriangleConfig(); ( m% F3 n5 m8 P8 D" h2 ], Y! [& g }产生三角波 $ S/ ^- H, K; b# l1 @ else 7 T. l+ d" p- w: Q! F7 L {产生阶梯波形% a. Q5 }2 O) k3 _4 Y! I /* The escalator wave has been selected */ $ d8 K/ T3 \7 p n1 Y6 L( T: N1 k j) |% W5 q, W9 ?2 [0 V/ j /* Escalator Wave generator -------------------------------------------*/ * G( `, a5 @ B4 B% E9 m; G7 r DAC_Ch1_EscalatorConfig(); 2 m9 V/ m$ A! T% W }8 T: k! f: s; p" h* { " X& M# K0 ]' A0 W+ n3 h+ F) ]! b ubKeyPressed = RESET; ) n5 l0 P8 R, V4 ~* w+ @9 O }* T }" T" ^& s. G% g } 6 g7 u" s& T" \! |} : t: Z8 |, k+ m! {# k3 x% P$ V! _0 N* O! ^$ V 8 Q( ?( f, F# C# a5 i- x; S : ?: {/ j8 V- t6 _* w6 B, _' u 首先说说STM32的DAC模块配置过程。 - L2 R! @3 H3 a: a, |0 [ 引脚如果使用DAC_OUT1时必须使用PA4 " r! b6 `9 ?4 M) b8 [* N3 b' H* r梯形波需要设一个数组。 " ^- N6 u0 E% L4 f 2 Q. Y. Y5 B! F* o! U, w触发源可能的列表; T6 [$ ^% h- i ; R5 M3 B0 H' ~$ X8 d4 K 好像不够了" D# n9 X' d4 S1 |! m3 O ; s6 t( S1 E5 Y* C6 G, C1 Z9 L2 ?

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一花一世界003 发布时间：2015-2-14 19:01

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先是HAL大致驱动模块部件 QQæªå¾20150214185825.png

MAIN函数运行流程
{
HAL_Init();
SystemClock_Config();

  /* Configures User push-button */
  BSP_PB_Init(BUTTON_USER, BUTTON_MODE_EXTI);

  /*##-1- Configure the DAC peripheral #######################################*/
  DacHandle.Instance = DACx;

  /*##-2- Configure the TIM peripheral #######################################*/
  TIM6_Config();

  /* Infinite loop */
  while (1)
  {
/* If the Key is pressed */
if (ubKeyPressed != RESET)
{
   HAL_DAC_DeInit(&DacHandle);

   /* select waves forms according to the User push-button status */
   if (ubSelectedWavesForm == 1)
   {接下来就是三角波产生的函数，
      /* The triangle wave has been selected */

      /* Triangle Wave generator -------------------------------------------*/
      DAC_Ch1_TriangleConfig();
   }产生三角波
   else
   {产生阶梯波形
      /* The escalator wave has been selected */

      /* Escalator Wave generator -------------------------------------------*/
      DAC_Ch1_EscalatorConfig();
   }

   ubKeyPressed = RESET;
}
  }
}

首先说说STM32的DAC模块配置过程。
QQæªå¾20150214183238.png