diff options
| author | Keith Packard <keithp@keithp.com> | 2012-08-28 18:13:02 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2012-08-28 23:00:23 -0700 |
| commit | fc9841ee5e92318471b6bec09b7075a788ab8872 (patch) | |
| tree | 021ff2c2e1f5844c11692878184a9746e3faec97 /src/drivers/ao_radio_slave.c | |
| parent | 27a879b4069ccedf8bbe39d7dbecf45000f29d8c (diff) | |
altos: Mostly working SPI radio link
This includes long delays to avoid overrunning the cc1111 input,
otherwise it works pretty well. The delays mean that we can't capture
the reply to a cmac command though, so more work is needed.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/drivers/ao_radio_slave.c')
| -rw-r--r-- | src/drivers/ao_radio_slave.c | 40 |
1 files changed, 23 insertions, 17 deletions
diff --git a/src/drivers/ao_radio_slave.c b/src/drivers/ao_radio_slave.c index 9dff511b..ab23894f 100644 --- a/src/drivers/ao_radio_slave.c +++ b/src/drivers/ao_radio_slave.c @@ -34,17 +34,24 @@ ao_radio_slave_signal(void) ao_arch_nop(); ao_arch_nop(); ao_arch_nop(); - ao_gpio_set(AO_RADIO_SLAVE_INT_PORT, AO_RADIO_SLAVE_INT_BIT, AO_RADIO_SLAVE_INT_PIN, 0); + ao_gpio_set(AO_RADIO_SLAVE_INT_PORT, AO_RADIO_SLAVE_INT_BIT, AO_RADIO_SLAVE_INT_PIN, 1); } static void ao_radio_slave_spi(void) { + uint8_t need_signal = 0; + + ao_spi_get_slave(AO_RADIO_SLAVE_BUS); for (;;) { - ao_spi_get_slave(AO_RADIO_SLAVE_BUS); - ao_spi_recv(&ao_radio_spi_request, (2 << 13) | sizeof (ao_radio_spi_request), AO_RADIO_SLAVE_BUS); - ao_spi_put_slave(AO_RADIO_SLAVE_BUS); - ao_led_for(AO_LED_RED, AO_MS_TO_TICKS(1000)); + ao_spi_recv(&ao_radio_spi_request, + (2 << 13) | sizeof (ao_radio_spi_request), + AO_RADIO_SLAVE_BUS); + if (need_signal) { + ao_radio_slave_signal(); + need_signal = 0; + } + ao_spi_recv_wait(); switch (ao_radio_spi_request.request) { case AO_RADIO_SPI_RECV: case AO_RADIO_SPI_CMAC_RECV: @@ -53,44 +60,43 @@ ao_radio_slave_spi(void) ao_radio_spi_recv_len = ao_radio_spi_request.recv_len; ao_radio_spi_recv_timeout = ao_radio_spi_request.timeout; ao_wakeup(&ao_radio_spi_recv_len); - break; + continue; case AO_RADIO_SPI_RECV_FETCH: - ao_spi_get_slave(AO_RADIO_SLAVE_BUS); ao_spi_send(&ao_radio_spi_reply, - ao_radio_spi_request.recv_len + AO_RADIO_SPI_REPLY_HEADER_LEN, + ao_radio_spi_request.recv_len, AO_RADIO_SLAVE_BUS); - ao_spi_put_slave(AO_RADIO_SLAVE_BUS); - break; + ao_radio_slave_signal(); + ao_spi_send_wait(); + continue; case AO_RADIO_SPI_RECV_ABORT: ao_radio_recv_abort(); break; case AO_RADIO_SPI_SEND: ao_config.radio_setting = ao_radio_spi_request.setting; - ao_radio_send(&ao_radio_spi_request.payload, ao_radio_spi_request.len - AO_RADIO_SPI_REQUEST_HEADER_LEN); - ao_radio_slave_signal(); + ao_radio_send(&ao_radio_spi_request.payload, + ao_radio_spi_request.len - AO_RADIO_SPI_REQUEST_HEADER_LEN); break; case AO_RADIO_SPI_CMAC_SEND: ao_config.radio_setting = ao_radio_spi_request.setting; - ao_radio_cmac_send(&ao_radio_spi_request.payload, ao_radio_spi_request.len - AO_RADIO_SPI_REQUEST_HEADER_LEN); - ao_radio_slave_signal(); + ao_radio_cmac_send(&ao_radio_spi_request.payload, + ao_radio_spi_request.len - AO_RADIO_SPI_REQUEST_HEADER_LEN); break; case AO_RADIO_SPI_CMAC_KEY: ao_xmemcpy(&ao_config.aes_key, ao_radio_spi_request.payload, AO_AES_LEN); - ao_radio_slave_signal(); break; case AO_RADIO_SPI_TEST_ON: + ao_config.radio_setting = ao_radio_spi_request.setting; ao_radio_test(1); - ao_radio_slave_signal(); break; case AO_RADIO_SPI_TEST_OFF: ao_radio_test(0); - ao_radio_slave_signal(); break; } + need_signal = 1; } } |