From 2b2a47d9cc5e9ec8e2635283e3c44073719fcf93 Mon Sep 17 00:00:00 2001
From: Jonathan McDowell <noodles@earth.li>
Date: Tue, 29 May 2018 07:32:09 +0100
Subject: [PATCH] Add a wait before sending via the 433MHz transmitter

Rather than immediately entering the lengthy (24ms+) loop to send a
command allow a number of calls to usbPoll() to complete first. This
allows the usbrelay control program to successfully receive a response
to its hid_write() call before we stop responding to USB for a bit.
---
 main.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/main.c b/main.c
index d6a5095..d5bf590 100644
--- a/main.c
+++ b/main.c
@@ -40,7 +40,7 @@
 uchar serno_read = 0;
 uchar serno[6];
 unsigned long cmd = 0;
-int repeat = 0;
+int repeat = 0, wait = 0;
 
 PROGMEM const char usbHidReportDescriptor[22] = {
 	0x06, 0x00, 0xff,		/* USAGE PAGE (Generic Desktop) */
@@ -126,11 +126,14 @@ uchar usbFunctionWrite(uchar *data, uchar len)
 {
 	if (data[0] == CMD_ALL_ON) {
 		cmd = ENER_ADDR | 0xd;
+		wait = 200;
 		repeat = 5;
 	} else if (data[0] == CMD_ALL_OFF) {
 		cmd = ENER_ADDR | 0xc;
+		wait = 10;
 		repeat = 5;
 	} else if (data[0] == CMD_ON) {
+		wait = 200;
 		switch (data[1]) {
 		case 1:
 			cmd = ENER_ADDR | 0xf;
@@ -152,6 +155,7 @@ uchar usbFunctionWrite(uchar *data, uchar len)
 			break;
 		}
 	} else if (data[0] == CMD_OFF) {
+		wait = 200;
 		switch (data[1]) {
 		case 1:
 			cmd = ENER_ADDR | 0xe;
@@ -241,9 +245,13 @@ int __attribute__((noreturn)) main(void)
 		wdt_reset();
 		usbPoll();
 		if (cmd) {
-			t433_send(cmd, 24);
-			if (--repeat == 0)
-				cmd = 0;
+			if (wait) {
+				wait--;
+			} else {
+				t433_send(cmd, 24);
+				if (--repeat == 0)
+					cmd = 0;
+			}
 		}
 	}
 }
-- 
2.39.2