liz/flipperzero-firmware
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[FL-3057] Allow use of any suitable pin for 1-Wire devices (#2350)

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* Add 1-wire thermometer example app stub
* Working 1-wire thermometer app
* Refactor app to use threads
* Clean up code, add comments
* Add CRC checking
* Increase update period
* Fix error in fbt
* Revert the old update period
* Use settable pin in onewire_host
* Use settable pin for onewire_slave
* Clear EXTI flag after callback, make private methods static in onewire_slave
* Do not hardcode GPIO pin number
* Remove iButton hal from furi_hal_rfid
* Remove most of furi_hal_ibutton
* Add some of furi_hal_ibutton back
* Slightly neater code
* Fix formatting
* Fix PVS-studio warnings
* Update CODEOWNERS
* Add furi_hal_gpio_get_ext_pin_number
* Create README.md
* FuriHal: move furi_hal_gpio_get_ext_pin_number to resources

---------

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
This commit is contained in:
Georgii Surkov
2023-02-08 08:40:44 +03:00
committed by GitHub
parent e3d473bf42
commit 7a3a1aaf0d
22 changed files with 592 additions and 184 deletions
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51
lib/one_wire/one_wire_slave.c
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@@ -27,6 +27,7 @@ typedef enum {
} OneWireSlaveError;
struct OneWireSlave {
const GpioPin* gpio_pin;
OneWireSlaveError error;
OneWireDevice* device;
OneWireSlaveResultCallback result_cb;
@@ -35,15 +36,15 @@ struct OneWireSlave {
/*********************** PRIVATE ***********************/
uint32_t onewire_slave_wait_while_gpio_is(OneWireSlave* bus, uint32_t time, const bool pin_value) {
UNUSED(bus);
static uint32_t
onewire_slave_wait_while_gpio_is(OneWireSlave* bus, uint32_t time, const bool pin_value) {
uint32_t start = DWT->CYCCNT;
uint32_t time_ticks = time * furi_hal_cortex_instructions_per_microsecond();
uint32_t time_captured;
do { //-V1044
time_captured = DWT->CYCCNT;
if(furi_hal_ibutton_pin_get_level() != pin_value) {
if(furi_hal_gpio_read(bus->gpio_pin) != pin_value) {
uint32_t remaining_time = time_ticks - (time_captured - start);
remaining_time /= furi_hal_cortex_instructions_per_microsecond();
return remaining_time;
@@ -53,14 +54,14 @@ uint32_t onewire_slave_wait_while_gpio_is(OneWireSlave* bus, uint32_t time, cons
return 0;
}
bool onewire_slave_show_presence(OneWireSlave* bus) {
static bool onewire_slave_show_presence(OneWireSlave* bus) {
// wait while master delay presence check
onewire_slave_wait_while_gpio_is(bus, OWS_PRESENCE_TIMEOUT, true);
// show presence
furi_hal_ibutton_pin_low();
furi_hal_gpio_write(bus->gpio_pin, false);
furi_delay_us(OWS_PRESENCE_MIN);
furi_hal_ibutton_pin_high();
furi_hal_gpio_write(bus->gpio_pin, true);
// somebody also can show presence
const uint32_t wait_low_time = OWS_PRESENCE_MAX - OWS_PRESENCE_MIN;
@@ -74,7 +75,7 @@ bool onewire_slave_show_presence(OneWireSlave* bus) {
return true;
}
bool onewire_slave_receive_bit(OneWireSlave* bus) {
static bool onewire_slave_receive_bit(OneWireSlave* bus) {
// wait while bus is low
uint32_t time = OWS_SLOT_MAX;
time = onewire_slave_wait_while_gpio_is(bus, time, false);
@@ -98,7 +99,7 @@ bool onewire_slave_receive_bit(OneWireSlave* bus) {
return (time > 0);
}
bool onewire_slave_send_bit(OneWireSlave* bus, bool value) {
static bool onewire_slave_send_bit(OneWireSlave* bus, bool value) {
const bool write_zero = !value;
// wait while bus is low
@@ -119,7 +120,7 @@ bool onewire_slave_send_bit(OneWireSlave* bus, bool value) {
// choose write time
if(write_zero) {
furi_hal_ibutton_pin_low();
furi_hal_gpio_write(bus->gpio_pin, false);
time = OWS_WRITE_ZERO;
} else {
time = OWS_READ_MAX;
@@ -127,12 +128,12 @@ bool onewire_slave_send_bit(OneWireSlave* bus, bool value) {
// hold line for ZERO or ONE time
furi_delay_us(time);
furi_hal_ibutton_pin_high();
furi_hal_gpio_write(bus->gpio_pin, true);
return true;
}
void onewire_slave_cmd_search_rom(OneWireSlave* bus) {
static void onewire_slave_cmd_search_rom(OneWireSlave* bus) {
const uint8_t key_bytes = 8;
uint8_t* key = onewire_device_get_id_p(bus->device);
@@ -151,7 +152,7 @@ void onewire_slave_cmd_search_rom(OneWireSlave* bus) {
}
}
bool onewire_slave_receive_and_process_cmd(OneWireSlave* bus) {
static bool onewire_slave_receive_and_process_cmd(OneWireSlave* bus) {
uint8_t cmd;
onewire_slave_receive(bus, &cmd, 1);
@@ -178,14 +179,14 @@ bool onewire_slave_receive_and_process_cmd(OneWireSlave* bus) {
}
}
bool onewire_slave_bus_start(OneWireSlave* bus) {
static bool onewire_slave_bus_start(OneWireSlave* bus) {
bool result = true;
if(bus->device == NULL) {
result = false;
} else {
FURI_CRITICAL_ENTER();
furi_hal_ibutton_start_drive_in_isr();
furi_hal_gpio_init(bus->gpio_pin, GpioModeOutputOpenDrain, GpioPullNo, GpioSpeedLow);
bus->error = NO_ERROR;
if(onewire_slave_show_presence(bus)) {
@@ -197,7 +198,7 @@ bool onewire_slave_bus_start(OneWireSlave* bus) {
result = false;
}
furi_hal_ibutton_start_interrupt_in_isr();
furi_hal_gpio_init(bus->gpio_pin, GpioModeInterruptRiseFall, GpioPullNo, GpioSpeedLow);
FURI_CRITICAL_EXIT();
}
@@ -207,7 +208,7 @@ bool onewire_slave_bus_start(OneWireSlave* bus) {
static void exti_cb(void* context) {
OneWireSlave* bus = context;
volatile bool input_state = furi_hal_ibutton_pin_get_level();
volatile bool input_state = furi_hal_gpio_read(bus->gpio_pin);
static uint32_t pulse_start = 0;
if(input_state) {
@@ -234,8 +235,9 @@ static void exti_cb(void* context) {
/*********************** PUBLIC ***********************/
OneWireSlave* onewire_slave_alloc() {
OneWireSlave* onewire_slave_alloc(const GpioPin* gpio_pin) {
OneWireSlave* bus = malloc(sizeof(OneWireSlave));
bus->gpio_pin = gpio_pin;
bus->error = NO_ERROR;
bus->device = NULL;
bus->result_cb = NULL;
@@ -249,14 +251,15 @@ void onewire_slave_free(OneWireSlave* bus) {
}
void onewire_slave_start(OneWireSlave* bus) {
furi_hal_ibutton_add_interrupt(exti_cb, bus);
furi_hal_ibutton_start_interrupt();
furi_hal_gpio_add_int_callback(bus->gpio_pin, exti_cb, bus);
furi_hal_gpio_write(bus->gpio_pin, true);
furi_hal_gpio_init(bus->gpio_pin, GpioModeInterruptRiseFall, GpioPullNo, GpioSpeedLow);
}
void onewire_slave_stop(OneWireSlave* bus) {
UNUSED(bus);
furi_hal_ibutton_stop();
furi_hal_ibutton_remove_interrupt();
furi_hal_gpio_write(bus->gpio_pin, true);
furi_hal_gpio_init(bus->gpio_pin, GpioModeAnalog, GpioPullNo, GpioSpeedLow);
furi_hal_gpio_remove_int_callback(bus->gpio_pin);
}
void onewire_slave_attach(OneWireSlave* bus, OneWireDevice* device) {
@@ -282,7 +285,7 @@ void onewire_slave_set_result_callback(
bool onewire_slave_send(OneWireSlave* bus, const uint8_t* address, const uint8_t data_length) {
uint8_t bytes_sent = 0;
furi_hal_ibutton_pin_high();
furi_hal_gpio_write(bus->gpio_pin, true);
// bytes loop
for(; bytes_sent < data_length; ++bytes_sent) {
@@ -304,7 +307,7 @@ bool onewire_slave_send(OneWireSlave* bus, const uint8_t* address, const uint8_t
bool onewire_slave_receive(OneWireSlave* bus, uint8_t* data, const uint8_t data_length) {
uint8_t bytes_received = 0;
furi_hal_ibutton_pin_high();
furi_hal_gpio_write(bus->gpio_pin, true);
for(; bytes_received < data_length; ++bytes_received) {
uint8_t value = 0;