22 | | The lib825 library provides features to facilitate access the weight information from an application program. |
23 | | |
24 | | ==== Cardinal Weighing Library Functions ==== |
25 | | |
26 | | Header file: mnbdcomm.h |
27 | | |
28 | | void MnBdStartup() - Opens devices for weight and other external communications |
29 | | Parameters - None |
30 | | Return value - None |
31 | | |
32 | | int MnBdProcess() - Services devices checking for weight or other data received |
33 | | Parameters - None |
34 | | Return value - 0 = idle |
35 | | mnbdProcWtRcv = weight data received |
36 | | |
37 | | float GetGrossWt(int scale) - Returns the gross weight |
38 | | Parameters - scale = scale number |
39 | | Return value - weight |
40 | | |
41 | | float GetTareWt(int scale) - Returns the tare weight |
42 | | Parameters - scale = scale number |
43 | | Return value - weight |
44 | | |
45 | | float GetNetWt(int scale) - Returns the net weight |
46 | | Parameters - scale = scale number |
47 | | Return value - weight |
48 | | |
49 | | byte GetWtStatus(int scale) |
50 | | Parameters - scale = scale number |
51 | | Return value - status byte bitmapped - possible bits |
52 | | nStatusBitMotion |
53 | | nStatusBitOverCap |
54 | | nStatusBitBelowZero |
55 | | nStatusBitCenterZero |
56 | | nStatusBitError |
57 | | nStatusBitKeypadTare |
58 | | |
59 | | bool GetMotion(int scale) |
60 | | Parameters - scale = scale number |
61 | | Return value - true if specified scale is in motion, otherwise false |
62 | | |
63 | | bool GetOverCap(int scale) |
64 | | Parameters - scale = scale number |
65 | | Return value - true if specified scale is in over capacity, otherwise false |
66 | | |
67 | | bool GetBelowZero(int scale) |
68 | | Parameters - scale = scale number |
69 | | Return value - true if specified scale is below zero, otherwise false |
70 | | |
71 | | bool GetCenterZero(int scale) |
72 | | Parameters - scale = scale number |
73 | | Return value - true if specified scale is at center of zero, otherwise false |
74 | | |
75 | | bool GetWtError(int scale) |
76 | | Parameters - scale = scale number |
77 | | Return value - true if specified scale is in weight error condition, otherwise false |
78 | | |
79 | | bool GetKeypadTare(int scale) |
80 | | Parameters - scale = scale number |
81 | | Return value - true if specified scale is in weight error condition, otherwise false |
82 | | |
83 | | int GetWtMode(int scale) |
84 | | Parameters - scale = scale number |
85 | | Return value - wtmode_gross, or wtmode_net mode of the specified scale |
86 | | |
87 | | void ToggleWtMode(int scale) - Toggles the specified scale between gross and net modes |
88 | | Parameters - scale = scale number |
89 | | Return value - None |
90 | | |
91 | | void SetWtMode(int scale, int wtmode) |
92 | | Parameters - scale = scale number |
93 | | wtmode = wtmode_gross, or wtmode_net |
94 | | Return value - None |
95 | | |
96 | | int GetNumScales(void) |
97 | | Parameters - None |
98 | | Return value - Number of scales |
99 | | |
100 | | char* FormatGrossWt(int scale, char* buf) |
101 | | Parameters - scale = scale number |
102 | | buf = character array buffer for output |
103 | | Return value - Pointer to buffer for convenience |
104 | | |
105 | | |
106 | | |
107 | | |
108 | | |
109 | | |
110 | | |
111 | | |
| 22 | The lib825ev library provides features to facilitate access the weight information from an application program. |
| 61 | {{{ |
| 62 | #include <stdio.h> |
| 63 | #include <stdlib.h> |
| 64 | #include <unistd.h> |
| 65 | #include <fcntl.h> |
| 66 | |
| 67 | #include <string.h> |
| 68 | |
| 69 | #include <math.h> |
| 70 | #include <time.h> |
| 71 | |
| 72 | #include <signal.h> |
| 73 | |
| 74 | #include "lcd.h" |
| 75 | |
| 76 | #include "touch.h" |
| 77 | #include "kypdbeep.h" |
| 78 | #include "form.h" |
| 79 | #include "mnbdcomm.h" |
| 80 | #include "login.h" |
| 81 | |
| 82 | extern struct mnbd_wt_struct wtdata[MAX_SCALES]; |
| 83 | |
| 84 | extern uint32 g_nRepWtIntv; |
| 85 | |
| 86 | extern int* pwim; |
| 87 | |
| 88 | extern int g_keycnt; |
| 89 | extern uint8 g_keybuf[10]; |
| 90 | |
| 91 | #define ON_THRES 3 |
| 92 | #define OFF_THRES 1 |
| 93 | |
| 94 | int main () |
| 95 | { |
| 96 | int i, x, stat, n = 0; |
| 97 | struct timespec delaytm; |
| 98 | char szMsg[41]; |
| 99 | time_t tnow; |
| 100 | struct tm *tmnow; |
| 101 | int prev_sec = -1; |
| 102 | |
| 103 | delaytm.tv_sec = 0; |
| 104 | delaytm.tv_nsec = 20000000; // 20 ms |
| 105 | |
| 106 | read_touch_cal(); |
| 107 | |
| 108 | OpenBeeper(); |
| 109 | |
| 110 | OpenMnBd(0); // Mainboard settings |
| 111 | |
| 112 | OpenTouch(); |
| 113 | |
| 114 | InitLCD(); |
| 115 | |
| 116 | read_current_operator(); |
| 117 | |
| 118 | OpenMnBd(0); |
| 119 | |
| 120 | OpenMnBd(TOT_SCALE); |
| 121 | |
| 122 | |
| 123 | printf("Calling SetWIM %d\r\n", TOT_SCALE); |
| 124 | |
| 125 | SetWIM(TOT_SCALE, ON_THRES, OFF_THRES, 200); |
| 126 | |
| 127 | printf("after Calling SetWIM\r\n"); |
| 128 | |
| 129 | g_nRepWtIntv = REP_INTV_SAMPLE_RATE; |
| 130 | MnBdRequest(REQ_SCALE(0), MNBD_REQ_REP_WT, NO_WAIT_ACK); |
| 131 | |
| 132 | stat = 0; |
| 133 | |
| 134 | time(&tnow); |
| 135 | tmnow = localtime(&tnow); |
| 136 | |
| 137 | while(1) |
| 138 | { |
| 139 | ReadKeypad(); |
| 140 | |
| 141 | if(g_keycnt > 0) |
| 142 | { |
| 143 | g_keycnt = 0; |
| 144 | if(g_keybuf[0] == BKSP || g_keybuf[0] == ESC) |
| 145 | break; |
| 146 | } |
| 147 | |
| 148 | nanosleep(&delaytm, NULL); |
| 149 | |
| 150 | x = CheckWIM(TOT_SCALE); |
| 151 | if(x > 1) |
| 152 | { |
| 153 | if(stat == 0 && pwim[0] > ON_THRES) // Item on scale |
| 154 | { |
| 155 | stat = 1; |
| 156 | printf("On Scale\r\n"); |
| 157 | } |
| 158 | |
| 159 | printf("WIM samples %d\r\n", x); |
| 160 | for(i = 0; i < x; i += 2) |
| 161 | { |
| 162 | printf("%d %.3f %.3f\r\n", i, *(float*)&pwim[i], *(float*)&pwim[i+1]); |
| 163 | n++; |
| 164 | } |
| 165 | sprintf(szMsg, "%10.3f %10.3f", *(float*)&pwim[x - 2], *(float*)&pwim[x - 1]); |
| 166 | |
| 167 | LocateLCD(0, 0); |
| 168 | PrintLCD(szMsg); |
| 169 | |
| 170 | time(&tnow); |
| 171 | tmnow = localtime(&tnow); |
| 172 | |
| 173 | if(tmnow->tm_sec != prev_sec) |
| 174 | { |
| 175 | LocateLCD(FONT_WIDTH * 30,0); |
| 176 | sprintf(szMsg, "%02d %4d", tmnow->tm_sec, n); |
| 177 | PrintLCD(szMsg); |
| 178 | |
| 179 | prev_sec = tmnow->tm_sec; |
| 180 | n = 0; |
| 181 | } |
| 182 | } |
| 183 | else if(ind_check_for_wt_rcv(0)) |
| 184 | { |
| 185 | if(stat != 0) |
| 186 | { |
| 187 | if(wtdata[0].grosswt < OFF_THRES) |
| 188 | { |
| 189 | printf("Off Scale\r\n"); |
| 190 | |
| 191 | stat = 0; |
| 192 | } |
| 193 | } |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | g_nRepWtIntv = 0; |
| 198 | MnBdRequest(REQ_SCALE(0), MNBD_REQ_REP_WT, NO_WAIT_ACK); |
| 199 | |
| 200 | printf("Done\r\n"); |
| 201 | |
| 202 | return 0; |
| 203 | } |
| 204 | |
| 205 | }}} |