2 * Copyright © 2012 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
19 #include <ao_radio_spi.h>
20 #include <ao_radio_cmac.h>
22 static __xdata struct ao_radio_spi_reply ao_radio_spi_reply;
24 static __xdata struct ao_radio_spi_request ao_radio_spi_request;
26 static __xdata uint8_t ao_radio_spi_recv_request;
27 static __xdata uint8_t ao_radio_spi_recv_len;
28 static __xdata uint16_t ao_radio_spi_recv_timeout;
31 ao_radio_slave_signal(void)
33 ao_gpio_set(AO_RADIO_SLAVE_INT_PORT, AO_RADIO_SLAVE_INT_BIT, AO_RADIO_SLAVE_INT_PIN, 0);
37 ao_gpio_set(AO_RADIO_SLAVE_INT_PORT, AO_RADIO_SLAVE_INT_BIT, AO_RADIO_SLAVE_INT_PIN, 1);
41 ao_radio_slave_spi(void)
43 uint8_t need_signal = 0;
45 ao_spi_get_slave(AO_RADIO_SLAVE_BUS);
47 ao_spi_recv(&ao_radio_spi_request,
48 (2 << 13) | sizeof (ao_radio_spi_request),
51 ao_radio_slave_signal();
55 switch (ao_radio_spi_request.request) {
56 case AO_RADIO_SPI_RECV:
57 case AO_RADIO_SPI_CMAC_RECV:
58 ao_config.radio_setting = ao_radio_spi_request.setting;
59 ao_radio_spi_recv_request = ao_radio_spi_request.request;
60 ao_radio_spi_recv_len = ao_radio_spi_request.recv_len;
61 ao_radio_spi_recv_timeout = ao_radio_spi_request.timeout;
62 ao_wakeup(&ao_radio_spi_recv_len);
64 case AO_RADIO_SPI_RECV_FETCH:
65 ao_spi_send(&ao_radio_spi_reply,
66 ao_radio_spi_request.recv_len,
68 ao_radio_slave_signal();
71 case AO_RADIO_SPI_RECV_ABORT:
72 ao_radio_recv_abort();
74 case AO_RADIO_SPI_SEND:
75 ao_config.radio_setting = ao_radio_spi_request.setting;
76 ao_radio_send(&ao_radio_spi_request.payload,
77 ao_radio_spi_request.len - AO_RADIO_SPI_REQUEST_HEADER_LEN);
80 case AO_RADIO_SPI_CMAC_SEND:
81 ao_config.radio_setting = ao_radio_spi_request.setting;
82 ao_radio_cmac_send(&ao_radio_spi_request.payload,
83 ao_radio_spi_request.len - AO_RADIO_SPI_REQUEST_HEADER_LEN);
86 case AO_RADIO_SPI_CMAC_KEY:
87 ao_xmemcpy(&ao_config.aes_key, ao_radio_spi_request.payload, AO_AES_LEN);
90 case AO_RADIO_SPI_TEST_ON:
91 ao_config.radio_setting = ao_radio_spi_request.setting;
95 case AO_RADIO_SPI_TEST_OFF:
104 ao_radio_slave_recv(void)
108 while (!ao_radio_spi_recv_len)
109 ao_sleep(&ao_radio_spi_recv_len);
110 len = ao_radio_spi_recv_len;
111 ao_radio_spi_recv_len = 0;
112 if (ao_radio_spi_recv_request == AO_RADIO_SPI_RECV) {
113 ao_radio_spi_reply.status = ao_radio_recv(&ao_radio_spi_reply.payload, len);
114 ao_radio_spi_reply.rssi = 0;
116 ao_radio_spi_reply.status = ao_radio_cmac_recv(&ao_radio_spi_reply.payload, len,
117 ao_radio_spi_recv_timeout);
118 ao_radio_spi_reply.rssi = ao_radio_cmac_rssi;
120 ao_radio_slave_signal();
124 static __xdata struct ao_task ao_radio_slave_spi_task;
125 static __xdata struct ao_task ao_radio_slave_recv_task;
128 ao_radio_slave_init(void)
130 ao_add_task(&ao_radio_slave_spi_task, ao_radio_slave_spi, "radio_spi");
131 ao_add_task(&ao_radio_slave_recv_task, ao_radio_slave_recv, "radio_recv");
132 ao_enable_output(AO_RADIO_SLAVE_INT_PORT, AO_RADIO_SLAVE_INT_BIT, AO_RADIO_SLAVE_INT_PIN, 1);