From 9bd15141a3abfbdc15a66d4f7f701c2b5568635f Mon Sep 17 00:00:00 2001
From: Marinus Enzinger <m.enzinger@campus.lmu.de>
Date: Thu, 10 May 2018 22:58:42 +0200
Subject: [PATCH] [w5100] Fixed RX interrupt handling
---
drivers/w5100/w5100.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/w5100/w5100.c b/drivers/w5100/w5100.c
index e391752fa9..aec5ec2598 100644
--- a/drivers/w5100/w5100.c
+++ b/drivers/w5100/w5100.c
@@ -34,7 +34,6 @@
#define ENABLE_DEBUG (0)
#include "debug.h"
-
#define SPI_CONF SPI_MODE_0
#define RMSR_DEFAULT_VALUE (0x55)
@@ -285,14 +284,21 @@ static void isr(netdev_t *netdev)
uint8_t ir;
w5100_t *dev = (w5100_t *)netdev;
- /* we only react on RX events, and if we see one, we read from the RX buffer
- * until it is empty */
+ /* read interrupt register */
spi_acquire(dev->p.spi, dev->p.cs, SPI_CONF, dev->p.clk);
ir = rreg(dev, S0_IR);
spi_release(dev->p.spi);
+
+ /* we only react on RX events, and if we see one, we read from the RX buffer
+ * until it is empty */
while (ir & IR_RECV) {
DEBUG("[w5100] netdev RX complete\n");
netdev->event_callback(netdev, NETDEV_EVENT_RX_COMPLETE);
+
+ /* reread interrupt register */
+ spi_acquire(dev->p.spi, dev->p.cs, SPI_CONF, dev->p.clk);
+ ir = rreg(dev, S0_IR);
+ spi_release(dev->p.spi);
}
}
--
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