ports/psoc6: Adding code for machine.Signal functionality.

Signed-off-by: NikhitaR-IFX <Nikhita.Rajasekhar@infineon.com>
Infineon · Sep 13, 2023 · ab6272c · ab6272c
1 parent 2a9bdbc
commit ab6272c
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diff --git a/docs/psoc6/quickref.rst b/docs/psoc6/quickref.rst
@@ -146,6 +146,9 @@ The following constants are used to configure the pin objects in addition to the
 
     Selects the pin value.
 
+There's a higher-level abstraction :ref:`machine.Signal <machine.Signal>`
+which can be used to invert a pin. Useful for illuminating active-low LEDs
+using ``on()`` or ``value(1)``.
 
 Software I2C bus
 ----------------

diff --git a/ports/psoc6/modules/machine/machine_pin.c b/ports/psoc6/modules/machine/machine_pin.c
@@ -7,6 +7,7 @@
 #include "modmachine.h"
 #include "drivers/machine/psoc6_gpio.h"
 #include "pins.h"
+#include "extmod/virtpin.h"
 #include "mplogger.h"
 
 
@@ -326,12 +327,32 @@ STATIC const mp_rom_map_elem_t machine_pin_locals_dict_table[] = {
 };
 STATIC MP_DEFINE_CONST_DICT(machine_pin_locals_dict, machine_pin_locals_dict_table);
 
+STATIC mp_uint_t pin_ioctl(mp_obj_t self_in, mp_uint_t request, uintptr_t arg, int *errcode) {
+    (void)errcode;
+    machine_pin_obj_t *self = self_in;
+    switch (request) {
+        case MP_PIN_READ: {
+            return cyhal_gpio_read(self->pin_addr);
+        }
+        case MP_PIN_WRITE: {
+            cyhal_gpio_write(self->pin_addr, arg);
+            return 0;
+        }
+    }
+    return -1;
+}
+
+STATIC const mp_pin_p_t pin_pin_p = {
+    .ioctl = pin_ioctl,
+};
+
 MP_DEFINE_CONST_OBJ_TYPE(
     machine_pin_type,
     MP_QSTR_Pin,
     MP_TYPE_FLAG_NONE,
     make_new, mp_pin_make_new,
     print, machine_pin_print,
     call, machine_pin_call,
+    protocol, &pin_pin_p,
     locals_dict, &machine_pin_locals_dict
     );
diff --git a/ports/psoc6/modules/machine/modmachine.c b/ports/psoc6/modules/machine/modmachine.c
@@ -258,6 +258,7 @@ STATIC const mp_rom_map_elem_t machine_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_I2C),                 MP_ROM_PTR(&machine_i2c_type) },
     { MP_ROM_QSTR(MP_QSTR_SoftI2C),             MP_ROM_PTR(&mp_machine_soft_i2c_type) },
     { MP_ROM_QSTR(MP_QSTR_Pin),                 MP_ROM_PTR(&machine_pin_type) },
+    { MP_ROM_QSTR(MP_QSTR_Signal),              MP_ROM_PTR(&machine_signal_type) },
     { MP_ROM_QSTR(MP_QSTR_RTC),                 MP_ROM_PTR(&machine_rtc_type) },
     { MP_ROM_QSTR(MP_QSTR_PWM),                 MP_ROM_PTR(&machine_pwm_type) },
     { MP_ROM_QSTR(MP_QSTR_SPI),                 MP_ROM_PTR(&machine_spi_type) },