Hello Alexander,
I'm trying to use the AT86RF233 radio transceiver for 6lowpan purposes.
Now I'm using an ieee802154 compatible transmitter to test the monitor
functionality of the 6lowpan node.
I've put the following code into the
at86rf230_rx_read_frame_complete() of the driver at86rf230.c into
kernel 4.7-rc2:
diff --git a/drivers/net/ieee802154/at86rf230.c
b/drivers/net/ieee802154/at86rf230.c
index 9f10da6..4d616c8 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -711,6 +711,18 @@ at86rf230_rx_read_frame_complete(void *context)
u8 len, lqi;
len = buf[1];
+
+ {
+ int i;
+ printk("\nSTART RX - spi_len: %d\n", len + 2);
+ for (i = 0; i < len + 2; i++) {
+ printk("0x%02x ", buf[i]);
+ if (i % 16 == 15)
+ printk("\n");
+ }
+ printk("\nEND RX\n");
+ }
+
if (!ieee802154_is_valid_psdu_len(len)) {
dev_vdbg(&lp->spi->dev, "corrupted frame received\n");
len = IEEE802154_MTU;
@@ -878,6 +890,18 @@ at86rf230_write_frame(void *context)
memcpy(buf + 2, skb->data, skb->len);
ctx->trx.len = skb->len + 2;
ctx->msg.complete = at86rf230_write_frame_complete;
+
+ {
+ int i, len = buf[1] + 2;
+ printk("\nSTART TX - spi_len: %d\n", len);
+ for (i = 0; i < len; i++) {
+ printk("0x%02x ", buf[i]);
+ if (i % 16 == 15)
+ printk("\n");
+ }
+ printk("\nEND TX\n");
+ }
+
rc = spi_async(lp->spi, &ctx->msg);
if (rc) {
ctx->trx.len = 2;
I've noticed some incompatible data read from the spi.
printk output:
INIZIO RX - spi_len: 13
0x00 0x0b 0x61 0x08 0x0f 0x04 0x16 0x04 0x16 0x01 0x00 0xe3 0xcf
FINE RX
INIZIO RX - spi_len: 248
0x20 0xf6 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0xfd 0xff 0x24 0xf0 0x62 0xff 0x24 0xf0 0x77 0xff 0x24 0xf0
0x41 0xff 0x24 0xf0 0x93 0xff 0x24 0xf0 0x72 0xff 0x24 0xf0 0xd4 0xff 0x24 0xf0
0x11 0xff 0x24 0xf0 0x8e 0xff 0x24 0xf0 0x8a 0xff 0x24 0xf0 0x0f 0xff 0x24 0xf0
0x49 0xff 0x24 0xf0 0xcb 0xff 0x24 0xf0 0x57 0xff 0x24 0xf0 0x30 0xff 0x24 0xf0
0xfb 0xff 0x24 0xf0 0x92 0xff 0x24 0xf0 0xce 0xff 0x24 0xf0 0x8d 0xff 0x24 0xf0
0x15 0xff 0x24 0xf0 0xa5 0xff 0x24 0xf0 0x4e 0xff 0x24 0xf0 0x57 0xff 0x24 0xf0
0x4d 0xff 0x24 0xf0 0x38 0xff 0x24 0xf0 0xf5 0xff 0x24 0xf0 0x41 0xff 0x24 0xf0
0xf9 0xff 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x01 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
FINE RX
INIZIO RX - spi_len: 248
0x00 0x0b 0x61 0x08 0x10 0x04 0x16 0x04 0x16 0x01 0x00 0xde 0x63 0xff 0x20 0xf0
0x43 0xff 0x20 0xf0 0xfd 0xff 0x20 0xf0 0x62 0xff 0x20 0xf0 0x77 0xff 0x20 0xf0
0x41 0xff 0x20 0xf0 0x93 0xff 0x20 0xf0 0x72 0xff 0x20 0xf0 0xd4 0xff 0x20 0xf0
0x11 0xff 0x20 0xf0 0x8e 0xff 0x20 0xf0 0x8a 0xff 0x20 0xf0 0x0f 0xff 0x20 0xf0
0x49 0xff 0x20 0xf0 0xcb 0xff 0x20 0xf0 0x57 0xff 0x20 0xf0 0x30 0xff 0x20 0xf0
0xfb 0xff 0x20 0xf0 0x92 0xff 0x20 0xf0 0xce 0xff 0x20 0xf0 0x8d 0xff 0x20 0xf0
0x15 0xff 0x20 0xf0 0xa5 0xff 0x20 0xf0 0x4e 0xff 0x20 0xf0 0x57 0xff 0x20 0xf0
0x4d 0xff 0x20 0xf0 0x38 0xff 0x20 0xf0 0xf5 0xff 0x20 0xf0 0x41 0xff 0x20 0xf0
0xf9 0xff 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x01 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
FINE RX
The transmitter sends 12 bytes (10 byte of payload and 2 of FCS) as
shown in the first output but the driver often reads 248 bytes from
the spi buffer which is wrong.
In the third output 'spi_len' is 248 even if the second byte of the
stream (the PHR) is 11!!!
With a logic analyzer I've checked the data from the at86rf233 and
they are correct, however when the driver reads them something goes
wrong and invalid data are returned!
It seems to me that the driver returns the previously written data
instead of the current read ones maybe due a race condition...
Below is the DTS settings for my board:
spi1: spi@f0004000 {
status = "okay";
cs-gpios = <&pioA 29 GPIO_ACTIVE_LOW>, <0>, <0>, <0>;
at86rf233@0 {
compatible = "atmel,at86rf233";
reg = <0>;
interrupt-parent = <&pioA>;
interrupts = <27 IRQ_TYPE_EDGE_RISING 7>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_at86rf233_irq>;
reset-gpio = <&pioA 24 GPIO_ACTIVE_LOW>;
sleep-gpio = <&pioA 25 GPIO_ACTIVE_HIGH>;
spi-max-frequency = <3000000>;
xtal-trim = /bits/ 8 <0x0F>;
};
pinctrl@fffff400 {
board {
pinctrl_at86rf233_irq: at86rf233_irq {
atmel,pins = <AT91_PIOA 27 AT91_PERIPH_GPIO AT91_PINCTRL_DEGLITCH>;
};
};
};
Thanks in advance for your help!
Regards,
Luca.
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