From: Keith Packard <keithp@keithp.com>
Date: Mon, 7 May 2018 04:09:22 +0000 (-0700)
Subject: altos/stmf0: Toggle IN2 SW_BUF bit when sending data
X-Git-Tag: 1.8.6~1^2~69
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=b15549d8c5277ba3aa425e232473a17dc136e5a4

altos/stmf0: Toggle IN2 SW_BUF bit when sending data

This tells the hardware we're done writing data to the second input
buffer and allows it to be switched from NAK to VALID.

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/src/stmf0/ao_usb_stm.c b/src/stmf0/ao_usb_stm.c
index 483d2419..3d227f20 100644
--- a/src/stmf0/ao_usb_stm.c
+++ b/src/stmf0/ao_usb_stm.c
@@ -1132,6 +1132,9 @@ _ao_usb_in2_send(void)
 	/* Toggle our usage */
 	ao_usb_in_tx2_which = 1 - ao_usb_in_tx2_which;
 
+	/* Toggle the SW_BUF flag */
+	_ao_usb_toggle_dtog(AO_USB_IN2_EPR, 1, 0);
+
 	/* Mark the outgoing buffer as valid */
 	_ao_usb_set_stat_tx(AO_USB_IN2_EPR, STM_USB_EPR_STAT_TX_VALID);