make sure we filp back to rx after we're done tx'ing...

eliminate the strobe code as it isn't used, this just pushes
packets back and forth..

main.c

@@ -36,7 +36,6 @@
 
 /* lora-irr headers */
 #include <misc.h>
-#include <strobe_rng_init.h>
 
 
 char *
@@ -67,6 +66,7 @@ txdone(void)
 {
 
 	usb_printf("txdone\r\n");
+	Radio.Rx(0);
 }
 
 void
@@ -186,64 +186,14 @@ process_line(char *start, char *end)
 	usb_printf("line: %.*s", end - start, start);
 }
 
-/*
- * Seed the randomness from the radio.  This is not a great
- * seed, and is hard to gauge how much randomness is really
- * there.  Assuming about 1 bit per 8 bits looks pretty safe,
- * so add 256 * 8 / 32 words.
- */
-static void
-radio_seed_rng(void)
-{
-#if 1
-	uint32_t v;
-	int i;
-
-	for (i = 0; i < 256 * 8 / 32; i++) {
-		v = Radio.Random();
-		strobe_seed_prng((uint8_t *)&v, sizeof v);
-	}
-#endif
-}
-
-static void
-analog_seed_rng(void)
-{
-#if 1
-	uint16_t v;
-	int i;
-
-	for (i = 0; i < 256 / 2; i++) {
-		/*
-		 * Capture some ADC data.  If pin is floating, 0xfff
-		 * happens frequently, if pin is grounded, 0 happens
-		 * frequently, filter these values out.
-		 */
-		do {
-			v = AdcReadChannel(&Adc, ADC_CHANNEL_21);
-		} while (v == 0 || v == 0xfff);
-		strobe_seed_prng((uint8_t *)&v, sizeof v);
-	}
-#endif
-}
-
 int
 main(void)
 {
-	uint8_t bytes[8];
-
-	strobe_rng_init();
 
 	BoardInitMcu();
 
 	Radio.Init(&revents);
 
-	analog_seed_rng();
-
-	radio_seed_rng();
-
-	strobe_rng_save();
-
 	/* turn on LED */
 	HAL_GPIO_WritePin(GPIOB, GPIO_PIN_8, GPIO_PIN_SET);
 
@@ -252,9 +202,6 @@ main(void)
 
 	usb_printf("starting...\r\n");
 
-	bare_strobe_randomize(bytes, sizeof bytes);
-	hexdump(bytes, sizeof bytes);
-	usb_printf("\r\n");
 #endif
 
 	uint32_t v;