IEEE 802.15.4 subsystem
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IEEE 802.15.4 subsystem Commit Details
| Date: | 2011-07-13 19:22:49 (9 years 24 days ago) |
|---|---|
| Author: | Werner Almesberger |
| Commit: | eeeb5599f87a4088e3201beb90015c650dcd0767 |
| Message: | atusb/fw/mac.c: reserved code 0 and added notification of TX
completion - mac.c (queued_tx_ack, rx_done, handle_irq): on TX completion, send a a zero byte on EP 1 - mac.c (handle_irq): don't receive zero-sized frames (they're malformed anyway), so that size zero can be used to signal TX completion |
| Files: |
atusb/fw/mac.c (4 diffs) |
Change Details
| atusb/fw/mac.c | ||
|---|---|---|
| 28 | 28 | static uint8_t tx_buf[MAX_PSDU]; |
| 29 | 29 | static uint8_t tx_size = 0; |
| 30 | 30 | static int txing = 0; |
| 31 | static int queued_tx_ack = 0; | |
| 31 | 32 | |
| 32 | 33 | |
| 33 | 34 | static uint8_t reg_read(uint8_t reg) |
| ... | ... | |
| 55 | 56 | static void rx_done(void *user) |
| 56 | 57 | { |
| 57 | 58 | led(0); |
| 59 | if (queued_tx_ack) { | |
| 60 | usb_send(&eps[1], "", 1, rx_done, NULL); | |
| 61 | queued_tx_ack = 0; | |
| 62 | } | |
| 58 | 63 | } |
| 59 | 64 | |
| 60 | 65 | |
| ... | ... | |
| 64 | 69 | uint8_t size, i; |
| 65 | 70 | |
| 66 | 71 | if (txing) { |
| 72 | if (eps[1].state == EP_IDLE) | |
| 73 | usb_send(&eps[1], "", 1, rx_done, NULL); | |
| 74 | else { | |
| 75 | if (queued_tx_ack) | |
| 76 | panic(); | |
| 77 | queued_tx_ack = 1; | |
| 78 | } | |
| 67 | 79 | txing = 0; |
| 68 | 80 | return 0; |
| 69 | 81 | } |
| ... | ... | |
| 79 | 91 | spi_begin(); |
| 80 | 92 | spi_send(AT86RF230_BUF_READ); |
| 81 | 93 | size = spi_recv(); |
| 82 | if (size & 0x80) { | |
| 94 | if (!size || (size & 0x80)) { | |
| 83 | 95 | spi_end(); |
| 84 | 96 | return 1; |
| 85 | 97 | } |
