*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
static __xdata struct ao_radio_spi_request ao_radio_spi_request;
-static __xdata uint8_t ao_radio_spi_recv_request;
-static __xdata uint8_t ao_radio_spi_recv_len;
-static __xdata uint16_t ao_radio_spi_recv_timeout;
+static __xdata uint8_t slave_state;
static void
-ao_radio_slave_signal(void)
+ao_radio_slave_low(void)
{
+ uint16_t i;
+
+ if (slave_state != 1)
+ ao_panic(1);
ao_gpio_set(AO_RADIO_SLAVE_INT_PORT, AO_RADIO_SLAVE_INT_BIT, AO_RADIO_SLAVE_INT_PIN, 0);
- 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);
+ for (i = 0; i < 1000; i++)
+ ao_arch_nop();
+ slave_state = 0;
+}
+
+static void
+ao_radio_slave_high(void)
+{
+ if (slave_state != 0)
+ ao_panic(2);
+ ao_gpio_set(AO_RADIO_SLAVE_INT_PORT, AO_RADIO_SLAVE_INT_BIT, AO_RADIO_SLAVE_INT_PIN, 1);
+ slave_state = 1;
}
static void
ao_radio_slave_spi(void)
{
+ 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);
+ ao_radio_slave_high();
+ ao_spi_recv_wait();
switch (ao_radio_spi_request.request) {
case AO_RADIO_SPI_RECV:
+
+ /* XXX monitor CS to interrupt the receive */
+
+ ao_config.radio_setting = ao_radio_spi_request.setting;
+ ao_led_on(AO_LED_RX);
+ ao_radio_spi_reply.status = ao_radio_recv(&ao_radio_spi_reply.payload,
+ ao_radio_spi_request.recv_len,
+ ao_radio_spi_request.timeout);
+ ao_led_off(AO_LED_RX);
+ ao_radio_spi_reply.rssi = 0;
+ ao_spi_send(&ao_radio_spi_reply,
+ AO_RADIO_SPI_REPLY_HEADER_LEN + ao_radio_spi_request.recv_len,
+ AO_RADIO_SLAVE_BUS);
+ ao_radio_slave_low();
+ ao_spi_send_wait();
+ continue;
case AO_RADIO_SPI_CMAC_RECV:
ao_config.radio_setting = ao_radio_spi_request.setting;
- ao_radio_spi_recv_request = ao_radio_spi_request.request;
- 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;
- case AO_RADIO_SPI_RECV_FETCH:
- ao_spi_get_slave(AO_RADIO_SLAVE_BUS);
+ ao_led_on(AO_LED_RX);
+ ao_radio_spi_reply.status = ao_radio_cmac_recv(&ao_radio_spi_reply.payload,
+ ao_radio_spi_request.recv_len,
+ ao_radio_spi_request.timeout);
+ ao_led_off(AO_LED_RX);
+ ao_radio_spi_reply.rssi = ao_radio_cmac_rssi;
ao_spi_send(&ao_radio_spi_reply,
- ao_radio_spi_request.recv_len + AO_RADIO_SPI_REPLY_HEADER_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;
- case AO_RADIO_SPI_RECV_ABORT:
- ao_radio_recv_abort();
- break;
+ ao_radio_slave_low();
+ ao_spi_send_wait();
+ continue;
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_led_on(AO_LED_TX);
+ ao_radio_send(&ao_radio_spi_request.payload,
+ ao_radio_spi_request.len - AO_RADIO_SPI_REQUEST_HEADER_LEN);
+ ao_led_off(AO_LED_TX);
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_led_on(AO_LED_TX);
+ ao_radio_cmac_send(&ao_radio_spi_request.payload,
+ ao_radio_spi_request.len - AO_RADIO_SPI_REQUEST_HEADER_LEN);
+ ao_led_off(AO_LED_TX);
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;
}
- }
-}
-
-static void
-ao_radio_slave_recv(void)
-{
- uint8_t len;
- for (;;) {
- while (!ao_radio_spi_recv_len)
- ao_sleep(&ao_radio_spi_recv_len);
- len = ao_radio_spi_recv_len;
- ao_radio_spi_recv_len = 0;
- if (ao_radio_spi_recv_request == AO_RADIO_SPI_RECV) {
- ao_radio_spi_reply.status = ao_radio_recv(&ao_radio_spi_reply.payload, len);
- ao_radio_spi_reply.rssi = 0;
- } else {
- ao_radio_spi_reply.status = ao_radio_cmac_recv(&ao_radio_spi_reply.payload, len,
- ao_radio_spi_recv_timeout);
- ao_radio_spi_reply.rssi = ao_radio_cmac_rssi;
- }
- ao_radio_slave_signal();
+ ao_radio_slave_low();
}
}
static __xdata struct ao_task ao_radio_slave_spi_task;
-static __xdata struct ao_task ao_radio_slave_recv_task;
void
ao_radio_slave_init(void)
{
ao_add_task(&ao_radio_slave_spi_task, ao_radio_slave_spi, "radio_spi");
- ao_add_task(&ao_radio_slave_recv_task, ao_radio_slave_recv, "radio_recv");
- ao_enable_output(AO_RADIO_SLAVE_INT_PORT, AO_RADIO_SLAVE_INT_BIT, AO_RADIO_SLAVE_INT_PIN, 1);
+ ao_enable_output(AO_RADIO_SLAVE_INT_PORT, AO_RADIO_SLAVE_INT_BIT, AO_RADIO_SLAVE_INT_PIN, 0);
}
projects / fw / altos / blobdiff