1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
|
/*
ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include "ch.h"
#include "hal.h"
#include "usbcfg.h"
#include "string.h"
#include "shell.h"
#include "chprintf.h"
#include "l3gd20.h"
/*===========================================================================*/
/* L3GD20 related. */
/*===========================================================================*/
/* L3GD20 Driver: This object represent an L3GD20 instance.*/
static L3GD20Driver L3GD20D1;
static int32_t rawdata[L3GD20_NUMBER_OF_AXES];
static float cookeddata[L3GD20_NUMBER_OF_AXES];
static char axisID[L3GD20_NUMBER_OF_AXES] = {'X', 'Y', 'Z'};
static uint32_t i;
static const SPIConfig spicfg = {
FALSE,
NULL,
GPIOE,
GPIOE_L3GD20_CS,
SPI_CR1_BR | SPI_CR1_CPOL | SPI_CR1_CPHA,
0
};
static L3GD20Config l3gd20cfg = {
&SPID1,
&spicfg,
NULL,
NULL,
L3GD20_FS_250DPS,
L3GD20_ODR_760HZ,
#if L3GD20_USE_ADVANCED
L3GD20_BDU_CONTINUOUS,
L3GD20_END_LITTLE,
L3GD20_BW3,
L3GD20_HPM_REFERENCE,
L3GD20_HPCF_8,
L3GD20_LP2M_ON,
#endif
};
/*===========================================================================*/
/* Command line related. */
/*===========================================================================*/
/*
* DP resistor control is not possible on the STM32F3-Discovery, using stubs
* for the connection macros.
*/
#define usb_lld_connect_bus(usbp)
#define usb_lld_disconnect_bus(usbp)
/* Enable use of special ANSI escape sequences.*/
#define CHPRINTF_USE_ANSI_CODE TRUE
#define SHELL_WA_SIZE THD_WORKING_AREA_SIZE(2048)
static void cmd_read(BaseSequentialStream *chp, int argc, char *argv[]) {
(void)argv;
if (argc != 1) {
chprintf(chp, "Usage: read [raw|cooked]\r\n");
return;
}
while (chnGetTimeout((BaseChannel *)chp, 150) == Q_TIMEOUT) {
if (!strcmp (argv[0], "raw")) {
#if CHPRINTF_USE_ANSI_CODE
chprintf(chp, "\033[2J\033[1;1H");
#endif
gyroscopeReadRaw(&L3GD20D1, rawdata);
chprintf(chp, "L3GD20 Gyroscope raw data...\r\n");
for(i = 0; i < L3GD20_NUMBER_OF_AXES; i++) {
chprintf(chp, "%c-axis: %d\r\n", axisID[i], rawdata[i]);
}
}
else if (!strcmp (argv[0], "cooked")) {
#if CHPRINTF_USE_ANSI_CODE
chprintf(chp, "\033[2J\033[1;1H");
#endif
gyroscopeReadCooked(&L3GD20D1, cookeddata);
chprintf(chp, "L3GD20 Gyroscope cooked data...\r\n");
for(i = 0; i < L3GD20_NUMBER_OF_AXES; i++) {
chprintf(chp, "%c-axis: %.4f DPS\r\n", axisID[i], cookeddata[i]);
}
}
else {
chprintf(chp, "Usage: read [raw|cooked]\r\n");
return;
}
}
chprintf(chp, "Stopped\r\n");
}
static void cmd_fullscale(BaseSequentialStream *chp, int argc, char *argv[]) {
(void)argv;
if (argc != 1) {
chprintf(chp, "Usage: fullscale [250|500|2000]\r\n");
return;
}
#if CHPRINTF_USE_ANSI_CODE
chprintf(chp, "\033[2J\033[1;1H");
#endif
if(!strcmp (argv[0], "250")) {
gyroscopeSetFullScale(&L3GD20D1, L3GD20_FS_250DPS);
chprintf(chp, "L3GD20 Gyroscope full scale set to 250 dps...\r\n");
}
else if(!strcmp (argv[0], "500")) {
gyroscopeSetFullScale(&L3GD20D1, L3GD20_FS_500DPS);
chprintf(chp, "L3GD20 Gyroscope full scale set to 500 dps...\r\n");
}
else if(!strcmp (argv[0], "2000")) {
gyroscopeSetFullScale(&L3GD20D1, L3GD20_FS_2000DPS);
chprintf(chp, "L3GD20 Gyroscope full scale set to 2000 dps...\r\n");
}
else {
chprintf(chp, "Usage: fullscale [250|500|2000]\r\n");
return;
}
}
static void cmd_bias(BaseSequentialStream *chp, int argc, char *argv[]) {
(void)argv;
if (argc != 1) {
chprintf(chp, "Usage: bias [sample|reset]\r\n");
return;
}
if(!strcmp (argv[0], "sample")) {
#if CHPRINTF_USE_ANSI_CODE
chprintf(chp, "\033[2J\033[1;1H");
#endif
chprintf(chp, "Please don't move the device while Green LEDs are on!\r\n");
chprintf(chp, "Press a key to start...\r\n");
while (chnGetTimeout((BaseChannel *)chp, 500) == Q_TIMEOUT)
;
palSetLine(LINE_LED6_GREEN);
palSetLine(LINE_LED7_GREEN);
chThdSleepMilliseconds(1000);
gyroscopeSampleBias(&L3GD20D1);
palClearLine(LINE_LED6_GREEN);
palClearLine(LINE_LED7_GREEN);
chprintf(chp, "Procedure completed!\r\n");
}
else if(!strcmp (argv[0], "reset")) {
#if CHPRINTF_USE_ANSI_CODE
chprintf(chp, "\033[2J\033[1;1H");
#endif
gyroscopeResetBias(&L3GD20D1);
chprintf(chp, "Bias correction removed!\r\n");
}
else {
chprintf(chp, "Usage: bias [sample|reset]\r\n");
return;
}
}
static const ShellCommand commands[] = {
{"read", cmd_read},
{"fullscale", cmd_fullscale},
{"bias", cmd_bias},
{NULL, NULL}
};
static const ShellConfig shell_cfg1 = {
(BaseSequentialStream *)&SDU1,
commands
};
/*===========================================================================*/
/* Main code. */
/*===========================================================================*/
/*
* LED blinker thread, times are in milliseconds.
*/
static THD_WORKING_AREA(waThread1, 128);
static THD_FUNCTION(Thread1, arg) {
(void)arg;
chRegSetThreadName("blinker");
while (true) {
systime_t time;
time = serusbcfg.usbp->state == USB_ACTIVE ? 250 : 500;
palClearLine(LINE_LED3_RED);
chThdSleepMilliseconds(time);
palSetLine(LINE_LED3_RED);
chThdSleepMilliseconds(time);
}
}
/*
* Application entry point.
*/
int main(void) {
/*
* System initializations.
* - HAL initialization, this also initializes the configured device drivers
* and performs the board-specific initializations.
* - Kernel initialization, the main() function becomes a thread and the
* RTOS is active.
*/
halInit();
chSysInit();
/* Initializes a serial-over-USB CDC driver.*/
sduObjectInit(&SDU1);
sduStart(&SDU1, &serusbcfg);
/*
* Activates the USB driver and then the USB bus pull-up on D+.
* Note, a delay is inserted in order to not have to disconnect the cable
* after a reset.
*/
usbDisconnectBus(serusbcfg.usbp);
chThdSleepMilliseconds(1500);
usbStart(serusbcfg.usbp, &usbcfg);
usbConnectBus(serusbcfg.usbp);
/* Creates the blinker thread.*/
chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO + 1, Thread1, NULL);
/* L3GD20 Object Initialization.*/
l3gd20ObjectInit(&L3GD20D1);
/* Activates the L3GD20 driver.*/
l3gd20Start(&L3GD20D1, &l3gd20cfg);
/* Shell manager initialization.*/
shellInit();
while(TRUE) {
if (SDU1.config->usbp->state == USB_ACTIVE) {
thread_t *shelltp = chThdCreateFromHeap(NULL, SHELL_WA_SIZE,
"shell", NORMALPRIO + 1,
shellThread, (void *)&shell_cfg1);
chThdWait(shelltp); /* Waiting termination. */
}
chThdSleepMilliseconds(1000);
}
l3gd20Stop(&L3GD20D1);
return 0;
}
|
