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lots of fixes.

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major fix is adding a completion counter based on packet length to
restart the MACA when it freezes on transmit.
This commit is contained in:
Mariano Alvira 2010-03-06 17:58:49 -05:00
parent 5c20312744
commit 0f400b4341
2 changed files with 53 additions and 34 deletions
Download patch file Download diff file Expand all files Collapse all files

54
lib/maca.c
View file

@ -15,10 +15,14 @@
#endif
#ifndef RECV_SOFTIMEOUT
//#define RECV_SOFTIMEOUT 4096 /* about 3.5 128 byte packets */
#define RECV_SOFTIMEOUT 10000 /* about 3.5 128 byte packets */
#define RECV_SOFTIMEOUT 4096 /* about 3.5 128 byte packets */
#endif
/* for 250kHz clock */
/* (32 chips/sym) * (sym/4bits) * (8bits/byte) = (64 chips/byte) */
/* (8 chips/clk) * (byte/64 chips) = byte/8clks */
#define CLK_PER_BYTE 8
#define MACA_CLOCK_DIV 95
#define reg(x) (*(volatile uint32_t *)(x))
@ -100,9 +104,6 @@ volatile packet_t* get_free_packet(void) {
free_head->right = 0;
}
for(i=0; i<9783; i++) { continue; }
// print_packets("get_free_packet");
irq_restore();
return p;
@ -117,8 +118,10 @@ void post_receive(void) {
*MACA_TXLEN = (MAX_PACKET_SIZE << 16);
if(dma_rx == 0) {
dma_rx = get_free_packet();
if (dma_rx == 0)
if (dma_rx == 0) {
printf("trying to fill MACA_DMARX but out of packet buffers\n");
return;
}
}
*MACA_DMARX = (uint32_t)&(dma_rx->data[0]);
/* with timeout */
@ -132,7 +135,7 @@ void post_receive(void) {
(maca_ctrl_seq_rx));
*/
*MACA_CONTROL = (
(1 << maca_ctrl_asap) |
(1 << maca_ctrl_asap) | ( 4 << PRECOUNT) |
(1 << maca_ctrl_prm) |
(maca_ctrl_seq_rx));
}
@ -157,7 +160,7 @@ volatile packet_t* rx_packet(void) {
void post_tx(void) {
/* set dma tx pointer to the payload */
/* and set the tx len */
volatile uint32_t i;
disable_irq(MACA);
last_post = TX_POST;
dma_tx = tx_head;
@ -169,13 +172,22 @@ void post_tx(void) {
printf("trying to fill MACA_DMARX but out of packet buffers\n");
}
*MACA_DMARX = (uint32_t)&(dma_rx->data[0]);
*MACA_TMREN = 0;
/* disable soft timeout clock */
/* disable start clock */
*MACA_TMRDIS = (1 << maca_tmren_sft) | ( 1 << maca_tmren_strt ) ;
/* set complete clock to long value */
/* acts like a watchdog incase the MACA locks up */
*MACA_CPLCLK = *MACA_CLK + (CLK_PER_BYTE * dma_tx->length+6) + (CLK_PER_BYTE * 0);
/* enable complete clock */
*MACA_TMREN = (1 << maca_tmren_cpl);
/* do the transmit */
enable_irq(MACA);
*MACA_CONTROL = ( (1 << maca_ctrl_prm) |
*MACA_CONTROL = ( (1 << maca_ctrl_prm) | ( 4 << PRECOUNT) |
(maca_ctrl_mode_no_cca << maca_ctrl_mode) |
(1 << maca_ctrl_asap) |
(maca_ctrl_seq_tx));
for(i=0; i<10; i++) { continue; }
}
void tx_packet(volatile packet_t *p) {
@ -196,7 +208,7 @@ void tx_packet(volatile packet_t *p) {
}
// print_packets("tx packet");
irq_restore();
if(get_field(*MACA_STATUS,CODE) != NOT_COMPLETED) { post_tx(); }
if(get_field(*MACA_STATUS,CODE) != NOT_COMPLETED) { post_tx(); }
return;
}
@ -254,17 +266,17 @@ void add_to_rx(volatile packet_t *p) {
return;
}
void decode_status(volatile uint32_t status) {
void decode_status(void) {
volatile uint32_t code;
code = get_field(status,CODE);
code = get_field(*MACA_STATUS,CODE);
/* PRINTF("status code 0x%x\n\r",code); */
switch(code)
{
case ABORTED:
{
PRINTF("maca: aborted\n\r");
// PRINTF("maca: aborted\n\r");
ResumeMACASync();
break;
@ -278,7 +290,7 @@ void decode_status(volatile uint32_t status) {
}
case CODE_TIMEOUT:
{
PRINTF("maca: timeout\n\r");
// PRINTF("maca: timeout\n\r");
ResumeMACASync();
break;
@ -292,7 +304,7 @@ void decode_status(volatile uint32_t status) {
}
case EXT_TIMEOUT:
{
PRINTF("maca: ext timeout\n\r");
// PRINTF("maca: ext timeout\n\r");
ResumeMACASync();
break;
@ -311,7 +323,7 @@ void decode_status(volatile uint32_t status) {
}
default:
{
PRINTF("status: %x", status);
PRINTF("status: %x", *MACA_STATUS);
ResumeMACASync();
}
@ -323,8 +335,6 @@ void maca_isr(void) {
// print_packets("maca_isr");
status = *MACA_STATUS;
if (data_indication_irq()) {
*MACA_CLRIRQ = (1 << maca_irq_di);
dma_rx->length = *MACA_GETRXLVL - 2;
@ -356,15 +366,15 @@ void maca_isr(void) {
PRINTF("*MACA_IRQ %x\n\r", i);
if (bit_is_set(status, maca_status_ovr))
if (bit_is_set(*MACA_STATUS, maca_status_ovr))
PRINTF("maca overrun\n\r");
if (bit_is_set(status, maca_status_busy))
if (bit_is_set(*MACA_STATUS, maca_status_busy))
PRINTF("maca busy\n\r");
if (bit_is_set(*MACA_STATUS, maca_status_crc))
PRINTF("maca crc error\n\r");
if (bit_is_set(*MACA_STATUS, maca_status_to))
PRINTF("maca timeout\n\r");
decode_status(status);
decode_status();
if(tx_head != 0) {
post_tx();