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pull up/down feature addition to close #48. fixed gpio cleanup() function again, 3rd time is a charm. version bump to 0.3.4

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This commit is contained in:
Robert Wolterman
2017-01-29 03:50:37 +00:00
parent a839661c3b
commit 2b23e2d165
10 changed files with 285 additions and 79 deletions
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81
source/common.c
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@ -249,6 +249,22 @@ int gpio_number(pins_t *pin)
return gpio_num;
} /* gpio_number */
int gpio_pud_capable(pins_t *pin)
{
int capable = -1;
switch (pin->base_method) {
case BASE_METHOD_AS_IS:
capable = 1;
break;
case BASE_METHOD_XIO:
capable = 0;
break;
}
return capable;
}
int lookup_gpio_by_key(const char *key)
{
@ -283,6 +299,39 @@ int lookup_gpio_by_altname(const char *altname)
return -1;
}
int lookup_pud_capable_by_key(const char *key)
{
pins_t *p;
for (p = pins_info; p->key != NULL; ++p) {
if (strcmp(p->key, key) == 0) {
return gpio_pud_capable(p);
}
}
return -1;
}
int lookup_pud_capable_by_name(const char *name)
{
pins_t *p;
for (p = pins_info; p->name != NULL; ++p) {
if (strcmp(p->name, name) == 0) {
return gpio_pud_capable(p);
}
}
return -1;
}
int lookup_pud_capable_by_altname(const char *altname)
{
pins_t *p;
for (p = pins_info; p->altname != NULL; ++p) {
if (strcmp(p->altname, altname) == 0) {
return gpio_pud_capable(p);
}
}
return -1;
}
int lookup_ain_by_key(const char *key)
{
pins_t *p;
@ -396,17 +445,29 @@ int get_gpio_number(const char *key, int *gpio)
return status;
}
int compute_port_pin(const char *key, int *port, int *pin)
int compute_port_pin(const char *key, int gpio, int *port, int *pin)
{
int gpio;
int rtn;
rtn = get_gpio_number(key, &gpio);
// Method from:
//https://bbs.nextthing.co/t/chippy-gonzales-fast-gpio/14056/6?u=xtacocorex
*port = gpio / 32;
*pin = gpio % 32;
int capable = 0;
int rtn = -1;
capable = lookup_pud_capable_by_key(key);
if (capable < 0) {
capable = lookup_pud_capable_by_name(key);
if (capable < 0) {
capable = lookup_gpio_by_altname(key);
if (capable < 0) {
capable = 0; // default to false
}
}
}
if (capable) {
// Method from:
// https://bbs.nextthing.co/t/chippy-gonzales-fast-gpio/14056/6?u=xtacocorex
*port = gpio / 32;
*pin = gpio % 32;
rtn = 0;
}
return rtn;
}