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add option to insert an ack packet on autoack

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This commit is contained in:
Mariano Alvira 2011-04-30 15:42:07 -04:00
parent e2d9082fc7
commit 0a2b86456b
1 changed files with 41 additions and 0 deletions
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41
cpu/mc1322x/lib/maca.c
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@ -538,6 +538,32 @@ void add_to_rx(volatile packet_t *p) {
return;
}
void insert_at_rx_head(volatile packet_t *p) {
safe_irq_disable(MACA);
BOUND_CHECK(p);
if(!p) { PRINTF("insert_at_rx_head passed packet 0\n\r"); return; }
p->offset = 1; /* first byte is the length */
if(rx_head == 0) {
/* start a new queue if empty */
rx_end = p;
rx_end->left = 0; rx_end->right = 0;
rx_head = rx_end;
} else {
rx_head->right = p;
p->left = rx_head;
rx_head = p; rx_head->left = 0;
}
// print_packets("insert at rx head");
irq_restore();
if(bit_is_set(*NIPEND, INT_NUM_MACA)) { *INTFRC = (1 << INT_NUM_MACA); }
return;
}
void decode_status(void) {
volatile uint32_t code;
@ -656,6 +682,21 @@ void maca_isr(void) {
/* PRINTF("maca action complete %d\n\r", get_field(*MACA_CONTROL,SEQUENCE)); */
if(last_post == TX_POST) {
tx_head->status = get_field(*MACA_STATUS,CODE);
#if MACA_INSERT_ACK
if(tx_head->status == SUCCESS) {
static volatile packet_t *ack_p;
if(ack_p = get_free_packet()) {
ack_p->length = 3;
ack_p->offset = 1;
ack_p->data[0] = 3;
ack_p->data[1] = 0x02;
ack_p->data[2] = 0;
ack_p->data[3] = *MACA_TXSEQNR;
insert_at_rx_head(ack_p);
}
}
#endif
if(maca_tx_callback != 0) { maca_tx_callback(tx_head); }
dma_tx = 0;
free_tx_head();