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Commit | Line | Data |
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35edb766 L |
1 | /* |
2 | * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de> | |
3 | * | |
93ea25f2 | 4 | * SPDX-License-Identifier: GPL-2.0 |
35edb766 L |
5 | */ |
6 | ||
228b1c5f | 7 | #include "cmd_gpio.h" |
8f23e84c | 8 | #include <ctype.h> |
8f23e84c | 9 | |
8f23e84c L |
10 | #include "print-utils.h" |
11 | #include "getopt-min.h" | |
12 | #include "env.h" | |
05994bd9 | 13 | #include "gpio.h" |
8f23e84c L |
14 | //#include "debug.h" |
15 | ||
16 | ||
17 | ||
05994bd9 L |
18 | static const int namestr = GPIO_MAX; |
19 | static char *pin_names[GPIO_MAX+1]; | |
8f23e84c L |
20 | static uint_least8_t pin_names_width; |
21 | ||
22 | static void pinnames_get(void) | |
23 | { | |
24 | static const FLASH char delim1[] = {":= "}; | |
25 | static const FLASH char delim2[] = {", "}; | |
26 | char *lp; | |
27 | char *ptr; | |
28 | uint_fast8_t i; | |
29 | ||
30 | if (pin_names[namestr] != NULL) | |
31 | free(pin_names[namestr]); | |
32 | memset(pin_names, 0, sizeof(pin_names)); | |
33 | pin_names_width = 0; | |
34 | ||
612a6965 | 35 | /* TODO: enters endless loop on wrong parameters */ |
4565be9a | 36 | |
bddc7e77 | 37 | if ((lp = getenv_str(PSTR(ENV_PINALIAS))) != NULL) { |
8f23e84c L |
38 | pin_names[namestr] = strdup(lp); |
39 | ptr = strtok_P(pin_names[namestr], delim1); | |
40 | while (ptr != NULL) { | |
05994bd9 | 41 | if (((i = strtoul(ptr, &lp, 10)) < GPIO_MAX) && |
8f23e84c L |
42 | lp != ptr && |
43 | (ptr = strtok_P(NULL, delim2)) != NULL ) { | |
44 | pin_names[i] = ptr; | |
45 | ptr = strtok_P(NULL, delim1); | |
46 | } | |
47 | } | |
48 | ||
05994bd9 | 49 | for (i = 0; i < GPIO_MAX; i++) |
8f23e84c L |
50 | if (strlen(pin_names[i]) > pin_names_width) |
51 | pin_names_width = strlen(pin_names[i]); | |
52 | } | |
53 | } | |
54 | ||
55 | ||
56 | static size_t xstrlen(char *s) | |
57 | { | |
58 | if (s == NULL) | |
59 | return 0; | |
60 | else | |
61 | return strlen(s); | |
62 | } | |
63 | ||
64 | static const FLASH char * const FLASH pinconf_str[] = { | |
65 | FSTR("?"), | |
66 | FSTR("Input"), | |
67 | FSTR("Pullup"), | |
68 | FSTR("Output"), | |
69 | FSTR("Clock"), | |
70 | }; | |
71 | ||
72 | static const FLASH char * const FLASH pinlevel_str[] = { | |
73 | FSTR("Low"), | |
74 | FSTR("High"), | |
75 | FSTR(""), | |
76 | }; | |
77 | ||
78 | static int print_pin(int pin, int multi) | |
79 | { | |
80 | int pinconf; | |
81 | const FLASH char *levelp; | |
82 | long div; | |
83 | ||
05994bd9 | 84 | pinconf = gpio_config_get(pin); |
8f23e84c | 85 | if (pinconf == OUTPUT_TIMER) { |
05994bd9 | 86 | div = gpio_clockdiv_get(pin); |
8f23e84c L |
87 | levelp = pinlevel_str[2]; |
88 | } else | |
05994bd9 | 89 | levelp = pinlevel_str[gpio_read(pin)]; |
8f23e84c L |
90 | |
91 | if (multi) { | |
92 | printf_P(PSTR("%3d "), pin); | |
93 | if (pin_names_width) { | |
94 | printf_P(PSTR("%s "), pin_names[pin]); | |
95 | print_blanks(pin_names_width - xstrlen(pin_names[pin])); | |
96 | } | |
97 | my_puts_P(pinconf_str[pinconf]); | |
98 | print_blanks(7 - strlen_P(pinconf_str[pinconf])); | |
99 | my_puts_P(levelp); | |
100 | print_blanks(5 - strlen_P(levelp)); | |
101 | if (pinconf == OUTPUT_TIMER) | |
102 | printf_P(PSTR("%8ld %8ld"), | |
103 | div, F_CPU/div); | |
104 | } else { | |
105 | printf_P(PSTR("%d: \"%s\", "), pin, pin_names[pin] ? pin_names[pin] : 0); | |
106 | my_puts_P(pinconf_str[pinconf]); | |
107 | printf_P(PSTR(", ")); | |
108 | my_puts_P(levelp); | |
109 | ||
110 | if (pinconf == OUTPUT_TIMER) | |
111 | printf_P(PSTR("divide by %ld (%ldHz)"), | |
112 | div, F_CPU/div); | |
113 | } | |
114 | printf_P(PSTR("\n")); | |
115 | ||
116 | return 0; | |
117 | } | |
118 | ||
119 | static int_fast8_t pinarg_insert(int pin, uint_fast8_t count, uint_fast8_t pinarg[]) | |
120 | { | |
121 | uint_fast8_t pos; | |
122 | ||
05994bd9 | 123 | if (pin < 0 || pin >= GPIO_MAX) |
8f23e84c L |
124 | return -1; |
125 | ||
126 | for (pos = 0; pos < count; pos++) { | |
127 | if (pin == pinarg[pos]) | |
128 | return 0; | |
129 | if (pin < pinarg[pos]) | |
130 | break; | |
131 | } | |
132 | for (uint_fast8_t i = count-1; i == pos ; i--) | |
133 | pinarg[i+1] = pinarg[i]; | |
134 | pinarg[pos] = pin; | |
135 | ||
136 | return 1; | |
137 | } | |
138 | ||
139 | static uint_fast8_t pinarg_get(char * arg, uint_fast8_t pinarg[]) | |
140 | { | |
141 | char *endp; | |
142 | uint_fast8_t pin1; | |
143 | int_fast8_t rc; | |
144 | uint_fast8_t count = 0; | |
145 | ||
146 | while (1) { | |
147 | pin1 = strtoul(arg, &endp, 10); | |
148 | if (endp != arg && *endp == '-') { | |
149 | arg = endp+1; | |
150 | uint_fast8_t pin2 = (int) strtoul(arg, &endp, 10); | |
151 | if (pin1 < pin2) | |
152 | for (; pin1 < pin2; pin1++) | |
153 | if ((rc = pinarg_insert(pin1, count, pinarg)) >= 0) | |
154 | count += rc; | |
155 | else | |
156 | return 0; | |
157 | else | |
158 | return 0; | |
159 | } | |
160 | if (endp != arg) { | |
161 | if ((*endp == ',' || *endp == '\0') && | |
162 | (rc = pinarg_insert(pin1, count, pinarg)) >= 0) { | |
163 | count += rc; | |
164 | if (*endp == '\0') | |
165 | return count; | |
166 | } else | |
167 | return 0; | |
168 | } else | |
169 | return 0; | |
170 | ||
171 | arg = endp+1; | |
172 | } | |
173 | } | |
174 | ||
175 | ||
93ea25f2 | 176 | command_ret_t do_gpio(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char *const argv[]) |
8f23e84c L |
177 | { |
178 | char printheader = 1; | |
05994bd9 | 179 | uint_fast8_t pinarg[GPIO_MAX]; |
8f23e84c L |
180 | uint_fast8_t pinargc; |
181 | ||
182 | (void) cmdtp; (void) flag; | |
183 | ||
184 | /* reset getopt() */ | |
beafa6d6 | 185 | optind = 0; |
8f23e84c L |
186 | |
187 | int opt; | |
188 | while ((opt = getopt(argc, argv, PSTR("s"))) != -1) { | |
189 | switch (opt) { | |
190 | case 's': | |
191 | printheader = 0; | |
192 | break; | |
193 | default: /* '?' */ | |
194 | return CMD_RET_USAGE; | |
195 | } | |
196 | } | |
197 | ||
198 | /* remaining arguments */ | |
199 | argc -= optind; | |
200 | ||
201 | pinnames_get(); | |
202 | ||
203 | if (argc == 0) { | |
204 | /* print cofig of all pins */ | |
05994bd9 | 205 | for (pinargc = 0; pinargc < GPIO_MAX; pinargc++) |
8f23e84c L |
206 | pinarg[pinargc] = pinargc; |
207 | } else { | |
208 | /* get first arg */ | |
209 | pinargc = pinarg_get(argv[optind++], pinarg); | |
210 | if (pinargc == 0) | |
211 | return CMD_RET_USAGE; | |
212 | else | |
213 | argc--; | |
214 | } | |
215 | ||
216 | if (argc == 0) { | |
217 | /* no more args, print config */ | |
218 | if (pinargc == 1) | |
219 | print_pin(pinarg[0], 0); | |
220 | else { | |
221 | if (printheader) { | |
222 | if (pin_names_width > 0) { | |
223 | if ( strlen("Name") > pin_names_width) | |
224 | pin_names_width = strlen("Name"); | |
225 | char s[pin_names_width+1]; | |
226 | memset(s, ' ', pin_names_width); | |
227 | s[pin_names_width] = '\0'; | |
228 | strncpy_P(s, PSTR("Name"), 4); | |
229 | printf_P(PSTR("Pin %s Config Level Divider Frequency/Hz\n"),s); | |
230 | memset(s, '-', pin_names_width); | |
231 | printf_P(PSTR("----%s-----------------------------------\n"), s); | |
232 | } else | |
233 | printf_P(PSTR("Pin Config Level Divider Frequency/Hz\n" | |
234 | "--------------------------------------\n")); | |
235 | } | |
236 | for (uint_fast8_t i = 0; i < pinargc; i++) | |
237 | print_pin(pinarg[i], 1); | |
238 | } | |
239 | return CMD_RET_SUCCESS; | |
240 | } | |
241 | ||
242 | /* arguments must be in pairs: pins conf */ | |
243 | if (argc % 2 != 1) | |
244 | return CMD_RET_USAGE; | |
245 | ||
246 | while (argc > 0) { | |
247 | char *endp; | |
05994bd9 | 248 | gpiomode_t mode = NONE; |
8f23e84c L |
249 | int level = 0; |
250 | unsigned long value = 0; | |
251 | uint8_t hz_flag = 0; | |
252 | ||
253 | switch (toupper(argv[optind][0])) { | |
254 | case 'H': | |
255 | level = 1; | |
256 | case 'L': | |
257 | mode = OUTPUT; | |
258 | break; | |
259 | case 'P': | |
260 | mode = INPUT_PULLUP; | |
261 | break; | |
262 | case 'I': | |
263 | case 'T': | |
264 | mode = INPUT; | |
265 | break; | |
266 | ||
267 | default: | |
268 | value = strtoul(argv[optind], &endp, 10); | |
269 | switch (*endp) { | |
270 | case 'M': | |
271 | value *= 1000; | |
272 | case 'K': | |
273 | value *= 1000; | |
274 | endp++; | |
275 | } | |
276 | ||
277 | if (*endp && strcmp_P(endp, PSTR("Hz")) == 0) { | |
278 | hz_flag = 1; | |
279 | endp += 2; | |
280 | } | |
281 | ||
282 | if (*endp != '\0') { | |
283 | printf_P(PSTR("invalid parameter: '%s'\n"), argv[optind]); | |
284 | return CMD_RET_USAGE; | |
285 | } | |
286 | ||
287 | if (value == 0) { | |
288 | printf_P(PSTR("invalid value: %lu \n")); | |
289 | return CMD_RET_USAGE; | |
290 | } | |
291 | ||
292 | if (hz_flag) { | |
293 | if (value > F_CPU / 2) { | |
294 | printf_P(PSTR("Max frequency is: %luHz\n"), F_CPU/2); | |
295 | return CMD_RET_USAGE; | |
296 | } | |
297 | value = F_CPU/value; | |
298 | } | |
299 | mode = OUTPUT_TIMER; | |
300 | ||
301 | } | |
302 | ||
303 | if (mode == NONE) | |
304 | return CMD_RET_USAGE; | |
305 | ||
306 | for (uint_fast8_t i = 0; i < pinargc; i++) { | |
307 | switch (mode) { | |
308 | case OUTPUT: | |
05994bd9 | 309 | gpio_write(pinarg[i], level); |
8f23e84c L |
310 | /* fall thru */ |
311 | case INPUT: | |
312 | case INPUT_PULLUP: | |
05994bd9 | 313 | gpio_config(pinarg[i], mode); |
8f23e84c L |
314 | break; |
315 | case OUTPUT_TIMER: | |
05994bd9 | 316 | if (gpio_clockdiv_set(pinarg[i], value) < 0) { |
8f23e84c L |
317 | printf_P(PSTR("Setting pin %d to %lu failed.\n"), |
318 | pinarg[i], value); | |
319 | } | |
320 | break; | |
321 | default: | |
322 | break; | |
323 | } | |
324 | } | |
325 | ||
326 | optind++; | |
327 | pinargc = pinarg_get(argv[optind++], pinarg); | |
328 | argc -= 2; | |
329 | } | |
330 | ||
331 | return CMD_RET_SUCCESS; | |
332 | } |