2 * wiringpi setup [MODE]
3 * MODE is one of -g -1 -p, as for gpio(1)
4 * optional, if not called is equivalent to saying just "setup"
5 * may not be called after any other wiringpi use in whole program
6 * there is no way to un-setup
8 * Most of the rest are very similar to gpio(1):
9 * boardRev => integer (see wiringPi.h)
10 * boardId => [list MODEL REV MEM MAKER OVERVOLTED]
13 * in out pwm pwmTone clock up down tri off
14 * alt0 alt1 alt2 alt3 alt4 alt5
26 /* ---8<--- end of documentation comment --8<-- */
29 * wiringpi.c - wiringPi binding for Tcl
30 * Copyright 2016 Ian Jackson
32 * This program is free software; you can redistribute it and/or
33 * modify it under the terms of the GNU General Public License as
34 * published by the Free Software Foundation; either version 2 of the
35 * License, or (at your option) any later version.
37 * This program is distributed in the hope that it will be useful, but
38 * WITHOUT ANY WARRANTY; without even the implied warranty of
39 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
40 * General Public License for more details.
42 * You should have received a copy of the GNU General Public License
43 * along with this library; if not, see <http://www.gnu.org/licenses/>.
50 #include "chiark_tcl_wiringpi.h"
55 /*---------- important types and forward declarations ----------*/
59 rc = ensure_setup(ip); \
60 if (rc) return rc; else
62 #define CHECK_RANGE(val, min, max, what, VAL) do{ \
64 return cht_staticerr(ip, what " too small" \
65 " (must be at least" #min ")", \
66 "WIRINGPI RANGE " VAL " MIN " #min); \
68 return cht_staticerr(ip, what " too large" \
69 " (must be at most" #max ")", \
70 "WIRINGPI RANGE " VAL " MAX " #max); \
73 static int setup_done;
75 /*---------- operations ----------*/
77 static int setup_failure(Tcl_Interp *ip, int r) {
80 codelist[0]= cht_ret_string(ip,"WIRINGPI");
81 codelist[1]= cht_ret_string(ip,"ERROR");
82 codelist[2]= cht_ret_string(ip,"SETUP");
83 codelist[3]= cht_ret_int(ip,r);
84 Tcl_SetObjResult(ip, Tcl_NewListObj(N, codelist));
86 Tcl_SetResult(ip, (char*)"wiringpi initialisation error", TCL_STATIC);
90 static int ensure_setup(Tcl_Interp *ip) {
92 int r = wiringPiSetup();
93 if (r) return setup_failure(ip, r);
99 int cht_do_wiringpitcl_setup(ClientData cd, Tcl_Interp *ip,
100 int objc, Tcl_Obj *const *objv) {
105 return cht_staticerr(ip,"wiringpi setup called again",
106 "WIRINGPI FORBIDDEN-REINIT SETUP");
110 rc = cht_pat_string(ip,*objv++,&modeopt);
112 if (modeopt[0] != '-' || !modeopt[1] || modeopt[2])
113 return cht_staticerr(ip,"wiringpi setup option wrong syntax", 0);
115 return cht_staticerr(ip,"wiringpi setup too many arguments", 0);
116 switch (modeopt[1]) {
117 case 'g': r = wiringPiSetupGpio(); break;
118 case '1': r = wiringPiSetupPhys(); break;
119 case 'p': r = piFaceSetup(2000 /* ?! copied from gpio.c* */); break;
121 return cht_staticerr(ip,"wiringpi setup option unknown value", 0);
126 if (r) return setup_failure(ip, r);
130 int cht_do_wiringpitcl_pwmc(ClientData cd, Tcl_Interp *ip, int divider) {
132 CHECK_RANGE(divider,1,4095,"divider for pwmc","DIVIDER");
133 pwmSetClock(divider);
137 int cht_do_wiringpitcl_pwmr(ClientData cd, Tcl_Interp *ip, int range) {
139 CHECK_RANGE(range,1,INT_MAX,"pwm range","RANGE");
144 int cht_do_wiringpitcl_boardId(ClientData cd, Tcl_Interp *ip,
156 for (i=0; i<N; i++) objl[i]= Tcl_NewIntObj(ints[i]);
157 *result= Tcl_NewListObj(N,objl);
162 int cht_do_wiringpitcl_boardRev(ClientData cd, Tcl_Interp *ip, int *result) {
164 *result = piBoardRev();
168 /*---------- families operations ----------*/
170 int cht_do_wiringpitcl_aread(ClientData cd, Tcl_Interp *ip, int pin, int *result) {
172 *result = analogRead(pin);
176 #define SIMPLE_WRITER_OP(op, min, max, wpicall) \
177 int cht_do_wiringpitcl_##op(ClientData cd, Tcl_Interp *ip, \
178 int pin, int val) { \
180 CHECK_RANGE(val,min,max, "value for " #op, "VAL"); \
185 SIMPLE_WRITER_OP(pwm, INT_MIN,INT_MAX, pwmWrite)
186 SIMPLE_WRITER_OP(awrite, INT_MIN,INT_MAX, analogWrite)
187 SIMPLE_WRITER_OP(write, 0, 1, digitalWrite)
188 SIMPLE_WRITER_OP(pwmTone, INT_MIN,INT_MAX, pwmToneWrite)
189 SIMPLE_WRITER_OP(clock, INT_MIN,INT_MAX, gpioClockSet)
192 M(in, { pinMode (pin, INPUT); }) \
193 M(input, { pinMode (pin, INPUT); }) \
194 M(out, { pinMode (pin, OUTPUT); }) \
195 M(output, { pinMode (pin, OUTPUT); }) \
196 M(pwm, { pinMode (pin, PWM_OUTPUT); }) \
197 M(pwmTone, { pinMode (pin, PWM_TONE_OUTPUT); }) \
198 M(clock, { pinMode (pin, GPIO_CLOCK); }) \
199 M(up, { pullUpDnControl(pin, PUD_UP); }) \
200 M(down, { pullUpDnControl(pin, PUD_DOWN); }) \
201 M(tri, { pullUpDnControl(pin, PUD_OFF); }) \
202 M(off, { pullUpDnControl(pin, PUD_OFF); }) \
203 M(alt0, { pinModeAlt(pin, 0b100); }) \
204 M(alt1, { pinModeAlt(pin, 0b101); }) \
205 M(alt2, { pinModeAlt(pin, 0b110); }) \
206 M(alt3, { pinModeAlt(pin, 0b111); }) \
207 M(alt4, { pinModeAlt(pin, 0b011); }) \
208 M(alt5, { pinModeAlt(pin, 0b010); })
210 #define MODE_FUNC(name, body) static void mode_##name(int pin) { body }
213 const WiringPiTclModeInfo cht_wiringpitclmodeinfo_entries[] = {
214 #define MODEINFO_ENTRY(name, body) { #name, mode_##name },
215 MODES(MODEINFO_ENTRY)
219 int cht_do_wiringpitcl_mode(ClientData cd, Tcl_Interp *ip, int pin,
220 const WiringPiTclModeInfo *mode) {
227 /*---------- main hooks for tcl ----------*/
229 CHT_INIT(wiringpi, {}, CHTI_COMMANDS(cht_wiringpitoplevel_entries))