From 0edd0722c8e06945d32fc24c517c52235c1482b4 Mon Sep 17 00:00:00 2001
From: laforge <laforge@6dc7ffe9-61d6-0310-9af1-9938baff3ed1>
Date: Thu, 14 Sep 2006 02:37:42 +0000
Subject: spi_transceive cannot work without a rx_buffer due to hardware
restrictions (Bug report by Henryk Ploetz)
git-svn-id: https://svn.openpcd.org:2342/trunk@196 6dc7ffe9-61d6-0310-9af1-9938baff3ed1
---
firmware/src/pcd/rc632.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
(limited to 'firmware')
diff --git a/firmware/src/pcd/rc632.c b/firmware/src/pcd/rc632.c
index 3a91e8f..f5ac8e7 100644
--- a/firmware/src/pcd/rc632.c
+++ b/firmware/src/pcd/rc632.c
@@ -98,13 +98,11 @@ static void spi_irq(void)
static int spi_transceive(const u_int8_t *tx_data, u_int16_t tx_len,
u_int8_t *rx_data, u_int16_t *rx_len)
{
- //tx_len = *rx_len = 65;
DEBUGPSPI("DMA Xfer tx=%s\r\n", hexdump(tx_data, tx_len));
if (*rx_len < tx_len) {
DEBUGPCRF("rx_len=%u smaller tx_len=%u\n", *rx_len, tx_len);
return -1;
}
- //AT91F_SPI_Disable(pSPI);
AT91F_SPI_ReceiveFrame(pSPI, rx_data, tx_len, NULL, 0);
AT91F_SPI_SendFrame(pSPI, tx_data, tx_len, NULL, 0);
@@ -113,7 +111,6 @@ static int spi_transceive(const u_int8_t *tx_data, u_int16_t tx_len,
AT91F_PDC_EnableTx(AT91C_BASE_PDC_SPI);
pSPI->SPI_IER = AT91C_SPI_ENDTX|AT91C_SPI_ENDRX;
- //pSPI->SPI_IDR = AT91C_SPI_ENDTX|AT91C_SPI_ENDRX;
while (! (pSPI->SPI_SR & AT91C_SPI_ENDRX)) ;
@@ -211,6 +208,7 @@ int rc632_reg_write(struct rfid_asic_handle *hdl,
int rc632_fifo_write(struct rfid_asic_handle *hdl,
u_int8_t len, u_int8_t *data, u_int8_t flags)
{
+ u_int16_t rx_len = sizeof(spi_inpuf);
if (len > sizeof(spi_outbuf)-1)
len = sizeof(spi_outbuf)-1;
@@ -219,7 +217,7 @@ int rc632_fifo_write(struct rfid_asic_handle *hdl,
DEBUG632("[FIFO] <= %s", hexdump(data, len));
- return spi_transceive(spi_outbuf, len+1, NULL, NULL);
+ return spi_transceive(spi_outbuf, len+1, spi_inbuf, &rx_len);
}
int rc632_reg_read(struct rfid_asic_handle *hdl,
--
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