Merge pull request #752 from Marco02Arduino/main

Add reset functionality to PCB_K0402WS-v3

doc/devices/PCB-K0402WS-V3.0.md

@@ -82,3 +82,15 @@ Voltage is made by a `Techcode TD1720` .
 Voltage is created by chip marked as `Techcode TD1720`.
 
 **There seems to have been a miscalculation when choosing the inductor and the device is ~25% more efficient with an 5V power supply.**
+
+
+## Reset Mod
+
+A reset button can be easily added by soldering a push button from TP131 (near the Spi ROM) to ground via a 1KOhm resistor.
+
+**PS:** `The reset button GPIO must be defined in the machine.c file before building the image, it must be selected the GPIO30_ACL_BIT3_EN instead of GPIO_NA under the PCB_K0402WS-V3.0 configurations.`
+
+Photo of the mod
+
+<img src="photos/PCB-K0402WS-V3.0/Reset_mod.jpg" width="300" />
+

machine/HI_K0402WS.c

@@ -19,7 +19,7 @@ __code const struct machine machine = {
 	.sfp_port[1].sds = 0, 
 	.sfp_port[1].i2c = I2CBUS( GPIO41_I2C_SDA3_MDIO1, GPIO40_I2C_SCL3_MDC1 ),
 
-	.reset_pin = GPIO_NA,
+	.reset_pin = GPIO30_ACL_BIT3_EN,
 	.high_leds = { .mux =  LED_28_SYS | LED_29, .enable = LED_27 | LED_28_SYS | LED_29 },
 	.port_led_set = { 0, 0, 0, 1, 0, 0, 0, 0, 1},
 	.led_sets = {