djsundog/circuitpython
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

esp8266/modpybpin: Add support for GPIO16.

Browse Source 
GPIO16 is actually special-function I/O, though some boards have LED there.
This commit is contained in:
Paul Sokolovsky 2016-01-08 22:04:00 +02:00
parent 342d903a13
commit eb247eacd8
1 changed files with 37 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
esp8266/modpybpin.c
View File

@ -65,9 +65,12 @@ STATIC const pyb_pin_obj_t pyb_pin_obj[] = {
{{&pyb_pin_type}, 13, 13, PERIPHS_IO_MUX_MTCK_U, FUNC_GPIO13},
{{&pyb_pin_type}, 14, 14, PERIPHS_IO_MUX_MTMS_U, FUNC_GPIO14},
{{&pyb_pin_type}, 15, 15, PERIPHS_IO_MUX_MTDO_U, FUNC_GPIO15},
// GPIO16 is special, belongs to different register set, and
// otherwise handled specially.
{{&pyb_pin_type}, 16, 16, -1, -1},
};
STATIC uint8_t pin_mode[16];
STATIC uint8_t pin_mode[16 + 1];
uint mp_obj_get_pin(mp_obj_t pin_in) {
if (mp_obj_get_type(pin_in) != &pyb_pin_type) {
@ -78,10 +81,22 @@ uint mp_obj_get_pin(mp_obj_t pin_in) {
}
int pin_get(uint pin) {
if (pin == 16) {
return READ_PERI_REG(RTC_GPIO_IN_DATA) & 1;
}
return GPIO_INPUT_GET(pin);
}
void pin_set(uint pin, int value) {
if (pin == 16) {
int out_en = (pin_mode[pin] == GPIO_MODE_OUTPUT);
WRITE_PERI_REG(PAD_XPD_DCDC_CONF, (READ_PERI_REG(PAD_XPD_DCDC_CONF) & 0xffffffbc) | 1);
WRITE_PERI_REG(RTC_GPIO_CONF, READ_PERI_REG(RTC_GPIO_CONF) & ~1);
WRITE_PERI_REG(RTC_GPIO_ENABLE, (READ_PERI_REG(RTC_GPIO_ENABLE) & ~1) | out_en);
WRITE_PERI_REG(RTC_GPIO_OUT, (READ_PERI_REG(RTC_GPIO_OUT) & ~1) | value);
return;
}
uint32_t enable = 0;
uint32_t disable = 0;
switch (pin_mode[pin]) {
@ -155,23 +170,27 @@ STATIC mp_obj_t pyb_pin_obj_init_helper(pyb_pin_obj_t *self, mp_uint_t n_args, c
pin_mode[self->phys_port] = mode;
// configure the GPIO as requested
PIN_FUNC_SELECT(self->periph, self->func);
#if 0
// Removed in SDK 1.1.0
if ((pull & GPIO_PULL_DOWN) == 0) {
PIN_PULLDWN_DIS(self->periph);
}
#endif
if ((pull & GPIO_PULL_UP) == 0) {
PIN_PULLUP_DIS(self->periph);
}
#if 0
if ((pull & GPIO_PULL_DOWN) != 0) {
PIN_PULLDWN_EN(self->periph);
}
#endif
if ((pull & GPIO_PULL_UP) != 0) {
PIN_PULLUP_EN(self->periph);
if (self->phys_port == 16) {
// TODO: Set pull up/pull down
} else {
PIN_FUNC_SELECT(self->periph, self->func);
#if 0
// Removed in SDK 1.1.0
if ((pull & GPIO_PULL_DOWN) == 0) {
PIN_PULLDWN_DIS(self->periph);
}
#endif
if ((pull & GPIO_PULL_UP) == 0) {
PIN_PULLUP_DIS(self->periph);
}
#if 0
if ((pull & GPIO_PULL_DOWN) != 0) {
PIN_PULLDWN_EN(self->periph);
}
#endif
if ((pull & GPIO_PULL_UP) != 0) {
PIN_PULLUP_EN(self->periph);
}
}
pin_set(self->phys_port, value);