You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
2.0 KiB
72 lines
2.0 KiB
7 years ago
|
//
|
||
|
|
// Created by MightyPork on 2018/02/03.
|
||
|
|
//
|
||
|
|
|
||
|
|
#include "platform.h"
|
||
|
|
#include "unit_base.h"
|
||
|
|
|
||
|
|
#define OW_INTERNAL
|
||
|
|
#include "_ow_internal.h"
|
||
|
|
|
||
|
|
/** Allocate data structure and set defaults */
|
||
|
|
error_t OW_preInit(Unit *unit)
|
||
|
|
{
|
||
|
|
struct priv *priv = unit->data = calloc_ck(1, sizeof(struct priv));
|
||
|
|
if (priv == NULL) return E_OUT_OF_MEM;
|
||
|
|
|
||
|
|
// the timer is not started until needed
|
||
|
|
priv->busyWaitTimer = xTimerCreate("1w_tim", // name
|
||
|
|
750, // interval (will be changed when starting it)
|
||
|
|
true, // periodic (we use this only for the polling variant, the one-shot will stop the timer in the CB)
|
||
|
|
unit, // user data
|
||
|
|
OW_TimerCb); // callback
|
||
|
|
|
||
|
|
if (priv->busyWaitTimer == NULL) return E_OUT_OF_MEM;
|
||
|
|
|
||
|
|
// some defaults
|
||
|
|
priv->pin_number = 0;
|
||
|
|
priv->port_name = 'A';
|
||
|
|
priv->parasitic = false;
|
||
|
|
|
||
|
|
return E_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Finalize unit set-up */
|
||
|
|
error_t OW_init(Unit *unit)
|
||
|
|
{
|
||
|
|
bool suc = true;
|
||
|
|
struct priv *priv = unit->data;
|
||
|
|
|
||
|
|
// --- Parse config ---
|
||
|
|
priv->ll_pin = hw_pin2ll(priv->pin_number, &suc);
|
||
|
|
priv->port = hw_port2periph(priv->port_name, &suc);
|
||
|
|
Resource rsc = hw_pin2resource(priv->port_name, priv->pin_number, &suc);
|
||
|
|
if (!suc) return E_BAD_CONFIG;
|
||
|
|
|
||
|
|
// --- Claim resources ---
|
||
|
|
TRY(rsc_claim(unit, rsc));
|
||
|
|
|
||
|
|
// --- Init hardware ---
|
||
|
|
LL_GPIO_SetPinMode(priv->port, priv->ll_pin, LL_GPIO_MODE_OUTPUT);
|
||
|
|
LL_GPIO_SetPinOutputType(priv->port, priv->ll_pin, LL_GPIO_OUTPUT_PUSHPULL);
|
||
|
|
LL_GPIO_SetPinSpeed(priv->port, priv->ll_pin, LL_GPIO_SPEED_FREQ_HIGH);
|
||
|
|
LL_GPIO_SetPinPull(priv->port, priv->ll_pin, LL_GPIO_PULL_UP); // pull-up for OD state
|
||
|
|
|
||
|
|
return E_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Tear down the unit */
|
||
|
|
void OW_deInit(Unit *unit)
|
||
|
|
{
|
||
|
|
struct priv *priv = unit->data;
|
||
|
|
|
||
|
|
// Release all resources
|
||
|
|
rsc_teardown(unit);
|
||
|
|
|
||
|
|
// Delete the software timer
|
||
|
|
assert_param(pdPASS == xTimerDelete(priv->busyWaitTimer, 1000));
|
||
|
|
|
||
|
|
// Free memory
|
||
|
|
free_ck(unit->data);
|
||
|
|
}
|