mips_sys

implement menu on LCD
Parent b08ba3a
Stefan Schuermans

Stefan Schuermans commited on 2012-04-04 22:26:27
Showing 5 changed files, with 271 additions and 53 deletions.

fw/main.c
View file @ c89d999
... ... 
@@ -1,48 +1,16 @@
1 1 
 #include "arp.h"
2 2 
 #include "cyc_cnt.h"
3 
+#include "dhcp.h"
3 4 
 #include "eth.h"
4 5 
 #include "ip.h"
5 
-#include "lcd.h"
6 6 
 #include "leds.h"
7 
-#include "switches.h"
7 
+#include "menu.h"
8 8 
 #include "uart.h"
9 9 
 #include "udp.h"
10 10
11 11 
 unsigned char leds_val = 0x88;
12 12
13 
-void uint2digits(unsigned int uint, unsigned int cnt, char digits[])
14 
-{
15 
-  while (cnt > 0) {
16 
-    --cnt;
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-    digits[cnt] = '0' + uint % 10;
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-    uint /= 10;
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-  }
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-}
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-
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-void switches(void)
23 
-{
24 
-  char cnt_digits[4];
25 
-
26 
-  lcd_chr(1, 0, switches_get_state(sw_0) ? '0' : ' ');
27 
-  lcd_chr(1, 1, switches_get_state(sw_1) ? '1' : ' ');
28 
-  lcd_chr(1, 2, switches_get_state(sw_2) ? '2' : ' ');
29 
-  lcd_chr(1, 3, switches_get_state(sw_3) ? '3' : ' ');
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-  lcd_chr(1, 4, switches_get_state(sw_east) ? 'E' : ' ');
31 
-  lcd_chr(1, 5, switches_get_state(sw_north) ? 'N' : ' ');
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-  lcd_chr(1, 6, switches_get_state(sw_south) ? 'S' : ' ');
33 
-  lcd_chr(1, 7, switches_get_state(sw_west) ? 'W' : ' ');
34 
-  lcd_chr(1, 8, switches_get_state(sw_center) ? 'C' : ' ');
35 
-  lcd_chr(1, 9, switches_get_state(sw_rot_a) ? 'a' : ' ');
36 
-  lcd_chr(1, 10, switches_get_state(sw_rot_b) ? 'b' : ' ');
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-
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-  uint2digits(switches_get_rot_cnt(), 4, cnt_digits);
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-  lcd_chr(1, 12, cnt_digits[0]);
40 
-  lcd_chr(1, 13, cnt_digits[1]);
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-  lcd_chr(1, 14, cnt_digits[2]);
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-  lcd_chr(1, 15, cnt_digits[3]);
43 
-}
44 
-
45 
-void uart(void)
13 
+void uart_rx_task(void)
46 14 
 {
47 15 
   unsigned short chr;
48 16
... ... 
@@ -53,28 +21,20 @@ void uart(void)
53 21 
   }
54 22 
 }
55 23
56 
-void eth_task(void)
24 
+void eth_rx_task(void)
57 25 
 {
58 26 
   void *vptr;
59 27 
   unsigned int sz;
60 
-  char digits[2];
61 28
62 29 
   while (eth_rx(&vptr, &sz))
63 30 
     ethernet_recv(vptr, sz);
64 
-
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-  uint2digits(eth_rx_get_cnt(), 2, digits);;
66 
-  lcd_chr(0, 11, digits[0]);
67 
-  lcd_chr(0, 12, digits[1]);
68 
-  uint2digits(eth_tx_get_cnt(), 2, digits);;
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-  lcd_chr(0, 14, digits[0]);
70 
-  lcd_chr(0, 15, digits[1]);
71 31 
 }
72 32
73 33 
 void tasks(void)
74 34 
 {
75 
-  switches();
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-  uart();
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-  eth_task();
35 
+  uart_rx_task();
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+  eth_rx_task();
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+  menu_task();
78 38 
 }
79 39
80 40 
 void leds_tick200(void)
... ... 
@@ -89,6 +49,7 @@ void tick200(void)
89 49 
   arp_tick200();
90 50 
   ip_tick200();
91 51 
   udp_tick200();
52 
+  dhcp_tick200();
92 53 
 }
93 54
94 55 
 int main()
... ... 
@@ -97,15 +58,13 @@ int main()
97 58
98 59 
   leds_set_state(0x01);
99 60
100 
-  eth_mac_init();
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-  eth_rx_init();
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-  eth_tx_init();
61 
+  menu_init();
103 62
104 63 
   leds_set_state(0x02);
105 64
106 
-  lcd_init();
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-  lcd_str(0, "MIPS I");
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-  lcd_str(1, "");
65 
+  eth_mac_init();
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+  eth_rx_init();
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+  eth_tx_init();
109 68
110 69 
   leds_set_state(0x04);
111 70
fw/memcpy.c
View file @ c89d999
... ... 
@@ -34,3 +34,39 @@ void memcpy(void *dest, const void *src, unsigned int sz)
34 34 
     *dest1++ = *src1++;
35 35 
 }
36 36
37 
+/**
38 
+ * @brief set memory to fixed value
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+ * @param[in] dest pointer to destination buffer
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+ * @param[in] val fixed value to fill memory with
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+ * @param[in] sz size of memory to fill
42 
+ */
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+void memset(void *dest, int val, unsigned int sz)
44 
+{
45 
+  unsigned char val1;
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+  unsigned int *dest4;
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+  unsigned int val4;
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+  unsigned int sz4;
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+  unsigned char *dest1;
50 
+
51 
+  val1 = val;
52 
+
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+  // word aligned memory address -> fast fill
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+  if (((unsigned int)dest & 3) == 0) {
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+    dest4 = dest;
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+    val4 = val1;
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+    val4 |= val4 << 8;
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+    val4 |= val4 << 16;
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+    sz4 = sz >> 2;
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+    for ( ; sz4 > 0; --sz4)
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+      *dest4++ = val4;
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+    // there might still be a few bytes to fill now
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+    dest = dest4;
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+    sz &= 3;
65 
+  }
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+
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+  // safe and slow fallback: fill byte-wise
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+  dest1 = dest;
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+  for ( ; sz > 0; --sz)
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+    *dest1++ = val1;
71 
+}
72 
+
fw/memcpy.h
View file @ c89d999
... ... 
@@ -9,5 +9,13 @@
9 9 
  */
10 10 
 void memcpy(void *dest, const void *src, unsigned int sz);
11 11
12 
+/**
13 
+ * @brief set memory to fixed value
14 
+ * @param[in] dest pointer to destination buffer
15 
+ * @param[in] val fixed value to fill memory with
16 
+ * @param[in] sz size of memory to fill
17 
+ */
18 
+void memset(void *dest, int val, unsigned int sz);
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+
12 20 
 #endif // #ifdef MEMCPY_H
13 21
fw/menu.c
View file @ c89d999
... ... 
@@ -0,0 +1,204 @@
1 
+#include "config.h"
2 
+#include "eth.h"
3 
+#include "lcd.h"
4 
+#include "macros.h"
5 
+#include "menu.h"
6 
+#include "switches.h"
7 
+
8 
+/// last value of rotary knob
9 
+static unsigned int menu_cur_rot_val = 0;
10 
+
11 
+/// current screen
12 
+static int menu_cur_screen = 0;
13 
+
14 
+/// current content on screen
15 
+static char menu_cur_content[16];
16 
+
17 
+/**
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+ * @brief convert unsigned integer to decimal
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+ * @param[in] uint unsigned integer value
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+ * @param[in] cnt number of digits
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+ * @param[out] digits value as decimal digits
22 
+ */
23 
+void menu_uint2dec(unsigned int uint, unsigned int cnt, char digits[])
24 
+{
25 
+  while (cnt > 0) {
26 
+    --cnt;
27 
+    digits[cnt] = '0' + uint % 10;
28 
+    uint /= 10;
29 
+  }
30 
+}
31 
+
32 
+/**
33 
+ * @brief convert unsigned integer to hexadecimal
34 
+ * @param[in] uint unsigned integer value
35 
+ * @param[in] cnt number of digits
36 
+ * @param[out] digits value as decimal hexadigits
37 
+ */
38 
+void menu_uint2hex(unsigned int uint, unsigned int cnt, char digits[])
39 
+{
40 
+  unsigned int val;
41 
+
42 
+  while (cnt > 0) {
43 
+    --cnt;
44 
+    val = uint & 15;
45 
+    digits[cnt] = val < 10 ? '0' + val : 'A' - 10 + val;
46 
+    uint >>= 4;
47 
+  }
48 
+}
49 
+
50 
+/**
51 
+ * @brief update screen content
52 
+ * @param[in] str new content to display
53 
+ */
54 
+static void menu_update_content(const char *str)
55 
+{
56 
+  unsigned int i;
57 
+
58 
+  // update only characters that changed (LCD is slow)
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+  for (i = 0; str[i] != 0 && i < 16; ++i) {
60 
+    if (menu_cur_content[i] != str[i]) {
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+      menu_cur_content[i] = str[i];
62 
+      lcd_chr(1, i, str[i]);
63 
+    }
64 
+  }
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+  // clear rest of line
66 
+  for (; i < 16; ++i) {
67 
+    if (menu_cur_content[i] != ' ') {
68 
+      menu_cur_content[i] = ' ';
69 
+      lcd_chr(1, i, ' ');
70 
+    }
71 
+  }
72 
+}
73 
+
74 
+/// start screen
75 
+static void menu_screen_start(void)
76 
+{
77 
+  menu_update_content("turn knob...");
78 
+}
79 
+
80 
+/// switches screen
81 
+static void menu_screen_switches(void)
82 
+{
83 
+  char buf[11];
84 
+
85 
+  buf[0] = switches_get_state(sw_0) ? '0' : ' ';
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+  buf[1] = switches_get_state(sw_1) ? '1' : ' ';
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+  buf[2] = switches_get_state(sw_2) ? '2' : ' ';
88 
+  buf[3] = switches_get_state(sw_3) ? '3' : ' ';
89 
+  buf[4] = switches_get_state(sw_east) ? 'E' : ' ';
90 
+  buf[5] = switches_get_state(sw_north) ? 'N' : ' ';
91 
+  buf[6] = switches_get_state(sw_south) ? 'S' : ' ';
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+  buf[7] = switches_get_state(sw_west) ? 'W' : ' ';
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+  buf[8] = switches_get_state(sw_center) ? 'C' : ' ';
94 
+  buf[9] = switches_get_state(sw_rot_a) ? 'a' : ' ';
95 
+  buf[10] = switches_get_state(sw_rot_b) ? 'b' : ' ';
96 
+  buf[11] = 0;
97 
+
98 
+  menu_update_content(buf);
99 
+}
100 
+
101 
+/// ethernet screen
102 
+static void menu_screen_eth(void)
103 
+{
104 
+  char buf[] = "RX 0000 TX 0000";
105 
+
106 
+  menu_uint2dec(eth_rx_get_cnt(), 4, &buf[3]);
107 
+  menu_uint2dec(eth_tx_get_cnt(), 4, &buf[11]);
108 
+
109 
+  menu_update_content(buf);
110 
+}
111 
+
112 
+/// MAC address screen
113 
+static void menu_screen_mac(void)
114 
+{
115 
+  unsigned int i;
116 
+  char buf[] = "000000000000";
117 
+
118 
+  for (i = 0; i < 6; ++i)
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+    menu_uint2hex(config_mac.mac[i], 2, &buf[i * 2]);
120 
+
121 
+  menu_update_content(buf);
122 
+}
123 
+
124 
+/// IP address screen
125 
+static void menu_screen_ip(void)
126 
+{
127 
+  unsigned int i;
128 
+  char buf[] = "000.000.000.000";
129 
+
130 
+  for (i = 0; i < 4; ++i)
131 
+    menu_uint2dec(config_ip.ip[i], 3, &buf[i * 4]);
132 
+
133 
+  menu_update_content(buf);
134 
+}
135 
+
136 
+/// subnet mask screen
137 
+static void menu_screen_netmask(void)
138 
+{
139 
+  unsigned int i;
140 
+  char buf[] = "000.000.000.000";
141 
+
142 
+  for (i = 0; i < 4; ++i)
143 
+    menu_uint2dec(config_ip.mask[i], 3, &buf[i * 4]);
144 
+
145 
+  menu_update_content(buf);
146 
+}
147 
+
148 
+/// gateway IP screen
149 
+static void menu_screen_gateway(void)
150 
+{
151 
+  unsigned int i;
152 
+  char buf[] = "000.000.000.000";
153 
+
154 
+  for (i = 0; i < 4; ++i)
155 
+    menu_uint2dec(config_ip.gw[i], 3, &buf[i * 4]);
156 
+
157 
+  menu_update_content(buf);
158 
+}
159 
+
160 
+/// available screens
161 
+static struct menu_screen {
162 
+  const char *title; ///< title of screen
163 
+  void (*update)(void); ///< function to update screen content
164 
+} menu_screens[] = {
165 
+  { "MIPS I", menu_screen_start },
166 
+  { "switches", menu_screen_switches },
167 
+  { "ethernet", menu_screen_eth },
168 
+  { "MAC address", menu_screen_mac },
169 
+  { "IP address", menu_screen_ip },
170 
+  { "subnet mask", menu_screen_netmask },
171 
+  { "gateway IP", menu_screen_gateway },
172 
+};
173 
+
174 
+/// initialize
175 
+void menu_init(void)
176 
+{
177 
+  lcd_init();
178 
+  menu_cur_screen = 0;
179 
+  lcd_str(0, menu_screens[0].title);
180 
+  menu_screens[0].update();
181 
+}
182 
+
183 
+/// task procedure - call as often as possible
184 
+void menu_task(void)
185 
+{
186 
+  // get new screen to show
187 
+  unsigned int new_rot_cnt = switches_get_rot_cnt();
188 
+  unsigned int new_rot_val = (new_rot_cnt + 2) / 4; // 1 click is 4 steps
189 
+  int delta = new_rot_val - menu_cur_rot_val;
190 
+  menu_cur_rot_val = new_rot_val;
191 
+  int new_screen = menu_cur_screen + delta;
192 
+  if (new_screen < 0)
193 
+    new_screen = count(menu_screens) - (-new_screen % count(menu_screens));
194 
+  new_screen = new_screen % count(menu_screens);
195 
+
196 
+  // screen changed -> show new title
197 
+  if (new_screen != menu_cur_screen) {
198 
+    menu_cur_screen = new_screen;
199 
+    lcd_str(0, menu_screens[menu_cur_screen].title);
200 
+  }
201 
+  // update current screen
202 
+  menu_screens[menu_cur_screen].update();
203 
+}
204 
+
fw/menu.h
View file @ c89d999
... ... 
@@ -0,0 +1,11 @@
1 
+#ifndef MENU_H
2 
+#define MENU_H
3 
+
4 
+/// initialize
5 
+void menu_init(void);
6 
+
7 
+/// task procedure - call as often as possible
8 
+void menu_task(void);
9 
+
10 
+#endif // #ifdef MENU_H
11 
+
0 12