From: Gerhard Sittig <redacted>
Date: Sun, 20 Feb 2022 07:10:33 +0000 (+0100)
Subject: kingst-la2016: comment on FPGA register at offset 0x0004 (unused)
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=c8aa9206e91ce983c7d12108f17f462663b337fa;p=libsigrok.git

kingst-la2016: comment on FPGA register at offset 0x0004 (unused)

The vendor firmware optionally keeps reading u32 values from the FPGA
register at offset 0x0004 outside of acquisition periods. To present
the input pin's current level and changes "in real time" in the GUI.
The sigrok driver does not use this information, but it's useful to
have the comment in the source code.
---

diff --git a/src/hardware/kingst-la2016/protocol.c b/src/hardware/kingst-la2016/protocol.c
index e59bae0a..2b1da858 100644
--- a/src/hardware/kingst-la2016/protocol.c
+++ b/src/hardware/kingst-la2016/protocol.c
@@ -79,6 +79,7 @@ static const struct kingst_model models[] = {
 #define REG_RUN		0x00	/* Read capture status, write start capture. */
 #define REG_PWM_EN	0x02	/* User PWM channels on/off. */
 #define REG_CAPT_MODE	0x03	/* Write 0x00 capture to SDRAM, 0x01 streaming. */
+#define REG_PIN_STATE	0x04	/* Read current pin state (real time display). */
 #define REG_BULK	0x08	/* Write start addr, byte count to download samples. */
 #define REG_SAMPLING	0x10	/* Write capture config, read capture SDRAM location. */
 #define REG_TRIGGER	0x20	/* Write level and edge trigger config. */