上次已经开启了Linux系统,并且有GUI桌面,虽然不是比较熟悉的Qt环境,但也是可以做个小应用感受下stm32mp135系列产品的特点。 首先要搭建开发环境,毫无疑问安装个SDK就行了,官方WiKi页面啥都有。! ^1 b8 f( V6 _7 @% K% u
基于Ubuntu18系统,补充安装所需要的库和小工具
: i" G! a6 N j& [- s6 O o 更新软件列表 安装python3
+ S* {$ A6 y3 H- sudo apt-get install gawk wget git diffstat unzip texinfo gcc-multilib chrpath socat cpio python3 python3-pip python3-pexpect
复制代码 其他工具- sudo apt-get install libssl-dev libgmp-dev libmpc-dev lz4 zstd
复制代码 编译器等组件 - sudo apt-get install build-essential libncurses-dev libyaml-dev libssl-dev
复制代码 默认使用python3 - sudo apt install python-is-python3
复制代码 其他有用的工具 - sudo apt-get install coreutils bsdmainutils sed curl bc lrzsz corkscrew cvs subversion mercurial nfs-common nfs-kernel-server libarchive-zip-perl dos2unix texi2html libxml2-utils
复制代码 执行完以上内容,就可以下载和安装SDK软件包了。从以下地址获取最新的SDK https://www.st.com/en/embedded-software/stm32mp1dev.html#get-software7 L4 a# V7 _: a6 {& ]3 Q8 x6 l l
我还是在windows下面下载的,然后拷贝到了虚拟机使用。使用tar xvf 解压该压缩包。chmod +x 赋予可执行权限。然后运行安装就行了,默认的目录是/opt/st/stm32mp1/,,这个路径就可以,直接继续安装。8 _* Z" l, ~. m" P+ P! ^
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然后就学着官方文档的样子去验证下SDK是否安装成功。
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以上就完成了编译环境,至于说开发环境,一般还得有个IDE或者其他编辑器加调试工具。这里打算做的小程序使用gedit就行。% z/ L6 s4 e3 ]; n. k4 _
首先拷贝官方给的demo程序,基于GTK得hello world。
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- #include <gtk/gtk.h>
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2 ~ [. u9 r. Q+ N/ e- R- static void
# @- f$ H, X" w S+ ~8 d& Q; U- F8 | - print_hello (GtkWidget *widget,8 H. L8 m2 B. H8 r& Z
- gpointer data)
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) C" ?; U/ e; o$ p - g_print ("Hello World\n");
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- static void
" H+ Z- k9 R5 e, B0 f8 K2 | - activate (GtkApplication *app,' O1 E' T( V, [1 U+ S
- gpointer user_data)
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- GtkWidget *window;
. z+ d/ Z. k( d8 a+ R - GtkWidget *button;: H. h6 K, J' }& w- V) O
- GtkWidget *button_box;6 n; j) O6 A: ^+ M, O8 }
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- window = gtk_application_window_new (app);
, B, w C0 e7 ?* [! B, C - gtk_window_set_title (GTK_WINDOW (window), "Window");
' F; N$ d% Z0 r) X/ a - gtk_window_set_default_size (GTK_WINDOW (window), 200, 200);: q6 N( c) D" v6 v( L9 j
) D8 b$ @2 ]- K# ~ [- button_box = gtk_button_box_new (GTK_ORIENTATION_HORIZONTAL);
& P8 |" y B5 P6 I, I( ~/ \, B - gtk_container_add (GTK_CONTAINER (window), button_box);
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Q: l" ^! Y& m; G% P- button = gtk_button_new_with_label ("Hello World");) x+ M5 n c7 p( G
- g_signal_connect (button, "clicked", G_CALLBACK (print_hello), NULL);
1 Y2 j7 H; v- b: E - g_signal_connect_swapped (button, "clicked", G_CALLBACK (gtk_widget_destroy), window);
3 e; \$ k* `$ T5 O, J - gtk_container_add (GTK_CONTAINER (button_box), button);. b/ H% Y$ X7 _$ t, L) }
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- gtk_widget_show_all (window);
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- int
' a E/ C3 O* I2 s d - main (int argc,
; x6 `2 R( S3 d4 f. k7 g8 ~5 t - char **argv)
+ G8 e C. l' T8 g1 P5 n* W - {
6 M! Y! T- P4 f L* s6 X2 s - GtkApplication *app;# A1 s( [: W0 V9 i* V) U, S
- int status;8 x0 ]. H; M! H% W$ B: ]( M
4 F% S% h7 D* k( N3 I1 c* b& I- app = gtk_application_new ("org.gtk.example", G_APPLICATION_DEFAULT_FLAGS);
2 d. P7 V, a: S" Y# _- m& s1 M - g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);0 P9 `4 [( J: S8 [( q
- status = g_application_run (G_APPLICATION (app), argc, argv);
* i) @* j% Q$ }! A; `8 C - g_object_unref (app);" v9 l9 ]3 z/ j4 h/ j, [
# z4 t3 t" w S' x% X+ N- return status;# C2 H" @3 W/ a+ E+ N
- }
复制代码 然后也复制一个makefile文件,其实单个文件,直接使用gcc命令也可以得。 - PROG = gtk_hello_world& o* A! r: D/ i# S N: v7 W5 o
- SRCS = gtk_hello_world.c' q. @; A* O# T9 C6 [* W# ?. o8 [- @
6 }* {, L' I a1 V0 a- CLEANFILES = $(PROG)
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/ `2 u* U4 m, b) f% Y# {* J2 x- # Add / change option in CFLAGS and LDFLAGS) |: V/ R& m2 @5 Q
- CFLAGS += -Wall $(shell pkg-config --cflags gtk+-3.0)% y/ \7 u) t7 W8 U0 x
- LDFLAGS += $(shell pkg-config --libs gtk+-3.0)
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- all: $(PROG)
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- $(PROG): $(SRCS)
1 u# b6 i: r0 N! q) P2 S" C - $(CC) -o $@ $^ $(CFLAGS) $(LDFLAGS)9 g0 [. f% A) s( A
/ P; B/ X4 J9 _: }0 C( ^+ W }3 D! R% r- clean:9 v* H9 k: r$ }+ f# x Y. c& w
- rm -f $(CLEANFILES) $(patsubst %.c,%.o, $(SRCS))
复制代码 然后make,scp到开发板执行程序,就可以看到一个hello world窗口出现在之前得桌面上了。" C5 X+ g8 b: Z, T/ K
* r) T: k; F1 u8 h9 T" E; Z3 P$ ] 接下来改程序,说实话没用过gtk,不过看了下helloworld得程序可以看懂,所以也百度了一下,就基本做出来了。
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. m& n# F* C* a+ z9 r$ t* ?- #include <gtk/gtk.h>& \, `% r0 ?3 E2 S O% G/ Y$ i
- #include <stdio.h>, `- B5 x+ ?' b' Q6 p
- #include <string.h>5 M- e$ C- o+ z7 u' L( C Q
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- char buf[50] = "";6 F3 x; L- T9 N( @' b) J0 P
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- void calc(GtkButton *button, gpointer data)
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0 ^, N; Y" f! m- D - const char *text = gtk_button_get_label(button);1 @8 o7 \2 V6 W- P: B
- 3 w& S& {. I0 v/ Y6 }7 V
- //退个操作3 V; U$ ~7 W' D, S
- if (0 == strcmp(text, "c"))
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- buf[strlen(buf) - 1] = 0;
! ~0 P0 i6 w, L5 A. ]+ H# p - }else{' V1 `) u( y4 W0 x5 f+ C) w
- ! i& |& M2 F' A6 L% Z2 C
- int a = 0, b = 0;
; {4 Z" N9 |) ^' x" a5 n+ Q - char c;
. ^, H" O9 s& [, x, X- i, c% @ - strcat(buf,text);7 T6 [0 J- x0 w5 w+ ~, g
- 8 a' c9 R; V5 J5 u5 U
- if (0 == strcmp("=", text)) {7 w, [0 D, [" n9 [/ B* B1 s" `
- 2 @2 o7 d9 K5 p1 ?7 b
- sscanf(buf, "%d%c%d", &a, &c, &b);
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- if ('+' == c) {1 W5 [; P- _' P* P: b5 y, G( f
- sprintf(buf,"%d", a+b);' K! a; [3 D8 {& m
- }) ^$ r! K; v! G! I) M' f
- else if ('-' == c) {8 {& [( O5 k# n+ s, i
- sprintf(buf, "%d", a-b);* O% ~, ]1 b' R. j
- }
5 I' c! W+ M9 y" V2 y - else if ('*' == c) {' z+ u1 M8 [4 ?$ j
- sprintf(buf, "%d", a*b);% v7 ]7 E2 K- T) U
- }
! W1 D" ^( P& {& j2 ?5 c% K4 M7 F - else if ('/' == c) {7 R& \8 P* N" w- b1 d
- sprintf(buf, "%d", a/b); B! n* m1 o- t& C5 ]) G' M
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-
4 G r3 L( h6 s. e - gtk_entry_set_text(GTK_ENTRY(data), buf);
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7 R' p6 V/ T1 T - return;- t% e6 K- G6 B" {) L& V8 B3 B( r
- }
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- int main(int argc,char *argv[])# T5 z1 G, K! v
- {
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+ y$ n; U9 l# }) }1 ?- gtk_init(&argc, &argv);
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# N. t: b9 ]+ o- GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);1 i/ N8 I# ?" c0 Q" a
- gtk_window_set_title (GTK_WINDOW (window), "calc");9 R' I: T a) k5 U$ ?0 Z$ W, j+ @
-
2 B0 z3 I- o4 G: ~ - //创建一个表格容器5行4列$ M2 h5 @ f m. I0 D
- GtkWidget *table = gtk_table_new(5,4,TRUE);3 R" M9 A6 ^3 b C" k5 I6 g0 I4 `. j
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- gtk_container_add(GTK_CONTAINER(window), table);
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4 j, t3 J8 y. e3 d6 V2 i - //创建一个行编辑% S1 e5 K. Y: b& d
- GtkWidget *entry = gtk_entry_new();% [6 ~; ~) V4 {3 [( w. s' c
- - s4 X7 R& b5 j2 b2 Y, t
- gtk_entry_set_text(GTK_ENTRY(entry), "0");
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' Y; e3 D' z7 ?) L/ D1 {- _) a1 A- gtk_editable_set_editable(GTK_EDITABLE(entry), FALSE);
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' [ v0 a, l. R9 S1 W# v$ I" @. Y" I - //创建多个按钮" z3 z8 _7 ?; t) N
- GtkWidget *button0 = gtk_button_new_with_label("0");
, m7 Y8 k6 h! ^3 V, X2 }* T - GtkWidget *button1 = gtk_button_new_with_label("1");
* U. G0 L4 n- F! f A: h - GtkWidget *button2 = gtk_button_new_with_label("2");/ h$ d$ p# B& m; h) A0 p
- GtkWidget *button3 = gtk_button_new_with_label("3");
4 G- s8 d5 z% x! T- f9 V6 [ - GtkWidget *button4 = gtk_button_new_with_label("4");1 S2 m* ^' ~$ j$ u
- GtkWidget *button5 = gtk_button_new_with_label("5");
% P5 B- [& N% x' ^# S* x9 u - GtkWidget *button6 = gtk_button_new_with_label("6");
$ M9 n5 W+ D5 {0 i4 P7 z - GtkWidget *button7 = gtk_button_new_with_label("7");) J- ]3 k" Z' {; y2 B O$ S9 s/ m
- GtkWidget *button8 = gtk_button_new_with_label("8");2 [. `8 r6 L8 B6 `
- GtkWidget *button9 = gtk_button_new_with_label("9");2 A) k8 X9 d/ y+ S8 T
- 8 b6 A% g* c( Y" y& f' x
- GtkWidget *button_add = gtk_button_new_with_label("+");, f, R( t2 W) P/ q7 c
- GtkWidget *button_minus = gtk_button_new_with_label("-");+ J: h7 b2 q5 M" p
- GtkWidget *button_mul = gtk_button_new_with_label("*");/ r+ i3 O# l0 G8 w y5 r
- GtkWidget *button_div = gtk_button_new_with_label("/");6 K: j8 z& n4 C" \7 N
- GtkWidget *button_equal = gtk_button_new_with_label("=");, W4 r7 K5 i: {8 c8 S
- GtkWidget *button_delete = gtk_button_new_with_label("c");* I' l2 {" [/ A: ~: m0 s
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- 4 B) e/ e; t+ b a6 R
- gtk_table_attach_defaults(GTK_TABLE(table), entry, 0, 4, 0, 1);
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9 s7 e' Q/ p" I* t) V& L! k: { - gtk_table_attach_defaults(GTK_TABLE(table), button0, 0, 1, 4, 5);- {0 g& c. T4 t. P0 O) C
- gtk_table_attach_defaults(GTK_TABLE(table), button1, 0, 1, 3, 4);
% [* U8 E" G9 \" D7 \ - gtk_table_attach_defaults(GTK_TABLE(table), button2, 1, 2, 3, 4);* K8 A% n: j+ g3 [, |+ N
- gtk_table_attach_defaults(GTK_TABLE(table), button3, 2, 3, 3, 4);1 L& R/ T Q5 U: u0 s1 c
- gtk_table_attach_defaults(GTK_TABLE(table), button4, 0, 1, 2, 3);/ E/ V% e0 m+ C
- gtk_table_attach_defaults(GTK_TABLE(table), button5, 1, 2, 2, 3);0 F) s: R3 B5 Z6 m! C1 G
- gtk_table_attach_defaults(GTK_TABLE(table), button6, 2, 3, 2, 3);& t G- |4 x- m7 G7 _" `
- gtk_table_attach_defaults(GTK_TABLE(table), button7, 0, 1, 1, 2);6 Y! A6 T- j5 ]3 n$ M
- gtk_table_attach_defaults(GTK_TABLE(table), button8, 1, 2, 1, 2);6 ` b' u f+ h# j
- gtk_table_attach_defaults(GTK_TABLE(table), button9, 2, 3, 1, 2);2 i! C/ |. w6 q( R, v7 g
- 8 D2 z9 r) o3 `+ E+ O
- gtk_table_attach_defaults(GTK_TABLE(table), button_add, 1, 2, 4, 5);) ]' L9 J. m% ~5 v$ g9 \
- gtk_table_attach_defaults(GTK_TABLE(table), button_minus, 2, 3, 4, 5);
4 W9 l4 U+ h( i& Q/ ^) E' [6 V - gtk_table_attach_defaults(GTK_TABLE(table), button_mul , 3, 4, 2, 3);' s- E+ s4 ?6 ?1 f
- gtk_table_attach_defaults(GTK_TABLE(table), button_div, 3, 4, 3, 4);
' Y. {4 j; m) o/ p( P b! d - gtk_table_attach_defaults(GTK_TABLE(table), button_equal, 3, 4, 4, 5);+ d* n' s& x: r; S8 A# t
- gtk_table_attach_defaults(GTK_TABLE(table), button_delete, 3, 4, 1, 2);4 ?- T4 w! j6 [2 E
-
' Z" o' j3 J( _ M n - //注册信号函数,calc()+ z5 N% S0 Z# H. X% M
- g_signal_connect(button0, "pressed", G_CALLBACK(calc), entry);
! ^) r) F6 H7 e5 ~) e7 `. P - g_signal_connect(button1, "pressed", G_CALLBACK(calc), entry);$ Z/ n2 W& O5 k A/ D+ B
- g_signal_connect(button2, "pressed", G_CALLBACK(calc), entry);
; T" a K& y2 o5 y - g_signal_connect(button3, "pressed", G_CALLBACK(calc), entry);
6 f$ v+ y7 P3 n4 v* p - g_signal_connect(button4, "pressed", G_CALLBACK(calc), entry);
, y( j. C2 L& ?/ {; u4 }5 n - g_signal_connect(button5, "pressed", G_CALLBACK(calc), entry);" A) H6 w5 P- ?3 F. k
- g_signal_connect(button6, "pressed", G_CALLBACK(calc), entry);0 G( ^% j; @# D4 H0 K: V
- g_signal_connect(button7, "pressed", G_CALLBACK(calc), entry);
8 v: t% c& y6 ` Q0 [! V# } - g_signal_connect(button8, "pressed", G_CALLBACK(calc), entry);! s% w4 ~# s- x5 n/ X( S
- g_signal_connect(button9, "pressed", G_CALLBACK(calc), entry);
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) d6 C) H( i3 p% j4 V, ~ - g_signal_connect(button_add, "pressed", G_CALLBACK(calc), entry);. b5 \9 r9 x& ^, p. c( d' @% J
- g_signal_connect(button_mul, "pressed", G_CALLBACK(calc), entry);2 A/ C0 C% ?5 F
- g_signal_connect(button_div, "pressed", G_CALLBACK(calc), entry);
3 Z! `* n8 J) e - g_signal_connect(button_minus, "pressed", G_CALLBACK(calc), entry);
5 C: g& r. r/ p, @8 }; \! v( k& s | - g_signal_connect(button_equal, "pressed", G_CALLBACK(calc), entry);1 p3 `3 y7 p+ n! |0 G6 I8 `
- g_signal_connect(button_delete, "pressed", G_CALLBACK(calc), entry);
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$ M4 N* G/ x6 J3 G- ?0 ?8 D- gtk_widget_show_all(window);* [2 Q w( H+ I+ t) z l: f
- 0 b# C; L$ H9 g/ X+ b
- //主事件循环6 s2 g( Y( m- I$ l$ g; K
- gtk_main();0 W% t2 ?, v; w) o$ d0 I
- : ~# }$ m4 k$ H' C; @9 |7 s3 L
- return 0;
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复制代码 以上程序,编译运行后,就可以有以下得效果。
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2 ]( H9 K3 n2 U, B9 |+ @; T! k 操作和UI都是比较简单得,就不演示过程了,系统得触摸驱动也是做好的,gtk只管做应用就好了。操作也算流畅,毕竟也没涉及到复杂的图表渲染。
- K3 R( J% J6 t4 }* P 搞到这里,发现其实不复杂得GUI程序用这套现成的框架倒也是挺方便。Linux系统下其实资源很丰富,软件开发方式也很多选择,所以不多做逗留了。这款开发板还有一大特点就是可以按照以往STM32单片机得方式进行使用,所以后面感受下1GHz的单片机开发方式。5 y3 E" j; {' W( Z/ q/ Z3 d9 ~
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官方板子不错,这么快就上手了。我的是odydess资料太少了。正在学习