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drivers/at86rf2xx: Adding Switch SRT to Random Number Generator

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This commit is contained in:
eduazocar 2022-06-30 18:13:13 -04:00
parent d9fc082686
commit e6a7039de4
9 changed files with 80 additions and 11 deletions
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19
drivers/at86rf2xx/at86rf2xx.c
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@ -151,15 +151,11 @@ static void at86rf2xx_disable_clock_output(at86rf2xx_t *dev)
#endif
}
static void at86rf2xx_enable_smart_idle(at86rf2xx_t *dev)
void at86rf2xx_enable_smart_idle(at86rf2xx_t *dev)
{
#if AT86RF2XX_SMART_IDLE_LISTENING
uint8_t tmp = at86rf2xx_reg_read(dev, AT86RF2XX_REG__TRX_RPC);
tmp |= (AT86RF2XX_TRX_RPC_MASK__RX_RPC_EN |
AT86RF2XX_TRX_RPC_MASK__PDT_RPC_EN |
AT86RF2XX_TRX_RPC_MASK__PLL_RPC_EN |
AT86RF2XX_TRX_RPC_MASK__XAH_TX_RPC_EN |
AT86RF2XX_TRX_RPC_MASK__IPAN_RPC_EN);
tmp |= AT86RF2XX_TRX_RPC_MASK__RX_RPC__SMART_IDLE;
at86rf2xx_reg_write(dev, AT86RF2XX_REG__TRX_RPC, tmp);
at86rf2xx_set_rxsensitivity(dev, RSSI_BASE_VAL);
#else
@ -167,6 +163,17 @@ static void at86rf2xx_enable_smart_idle(at86rf2xx_t *dev)
#endif
}
void at86rf2xx_disable_smart_idle(at86rf2xx_t *dev)
{
#if AT86RF2XX_SMART_IDLE_LISTENING
uint8_t tmp = at86rf2xx_reg_read(dev, AT86RF2XX_REG__TRX_RPC);
tmp &= ~AT86RF2XX_TRX_RPC_MASK__RX_RPC__SMART_IDLE;
at86rf2xx_reg_write(dev, AT86RF2XX_REG__TRX_RPC, tmp);
#else
(void) dev;
#endif
}
void at86rf2xx_reset(at86rf2xx_t *dev)
{
uint8_t tmp;

4
drivers/at86rf2xx/at86rf2xx_internal.c
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@ -221,8 +221,9 @@ void at86rf2xx_configure_phy(at86rf2xx_t *dev)
}
#if AT86RF2XX_RANDOM_NUMBER_GENERATOR
void at86rf2xx_get_random(const at86rf2xx_t *dev, uint8_t *data, size_t len)
void at86rf2xx_get_random(at86rf2xx_t *dev, uint8_t *data, size_t len)
{
at86rf2xx_disable_smart_idle(dev);
for (size_t byteCount = 0; byteCount < len; ++byteCount) {
uint8_t rnd = 0;
for (uint8_t i = 0; i < 4; ++i) {
@ -236,5 +237,6 @@ void at86rf2xx_get_random(const at86rf2xx_t *dev, uint8_t *data, size_t len)
}
data[byteCount] = rnd;
}
at86rf2xx_enable_smart_idle(dev);
}
#endif

7
drivers/at86rf2xx/at86rf2xx_netdev.c
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@ -459,7 +459,12 @@ static int _get(netdev_t *netdev, netopt_t opt, void *val, size_t max_len)
return sizeof(uint8_t);
#endif /* MODULE_NETDEV_IEEE802154_OQPSK */
#if AT86RF2XX_RANDOM_NUMBER_GENERATOR
case NETOPT_RANDOM:
assert(max_len >= sizeof(uint32_t));
at86rf2xx_get_random(dev, (uint8_t*)val, sizeof(val));
break;
#endif
default:
res = -ENOTSUP;
break;

2
drivers/at86rf2xx/include/at86rf2xx_internal.h
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@ -239,7 +239,7 @@ void at86rf2xx_configure_phy(at86rf2xx_t *dev);
* @param[out] data buffer to copy the random data to
* @param[in] len number of random bytes to store in data
*/
void at86rf2xx_get_random(const at86rf2xx_t *dev, uint8_t *data, size_t len);
void at86rf2xx_get_random(at86rf2xx_t *dev, uint8_t *data, size_t len);
#endif
#ifdef __cplusplus

10
drivers/at86rf2xx/include/at86rf2xx_registers.h
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@ -533,6 +533,16 @@ extern "C" {
#define AT86RF2XX_TRX_RPC_MASK__XAH_TX_RPC_EN (0x04)
#define AT86RF2XX_TRX_RPC_MASK__IPAN_RPC_EN (0x02)
/**
* @brief Bits to set to enable smart idle
*/
#define AT86RF2XX_TRX_RPC_MASK__RX_RPC__SMART_IDLE \
(AT86RF2XX_TRX_RPC_MASK__RX_RPC_EN \
| AT86RF2XX_TRX_RPC_MASK__PDT_RPC_EN \
| AT86RF2XX_TRX_RPC_MASK__PLL_RPC_EN \
| AT86RF2XX_TRX_RPC_MASK__XAH_TX_RPC_EN \
| AT86RF2XX_TRX_RPC_MASK__IPAN_RPC_EN)
#ifdef __cplusplus
}
#endif

18
drivers/include/at86rf2xx.h
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@ -612,6 +612,24 @@ void at86rf2xx_tx_exec(at86rf2xx_t *dev);
*/
bool at86rf2xx_cca(at86rf2xx_t *dev);
/**
* @brief Enable the smart receive tecnology (SRT)
*
* The SRT reduces the power consumption during RX listening periods.
*
* @param[in] dev device to use
*
*/
void at86rf2xx_enable_smart_idle(at86rf2xx_t *dev);
/**
* @brief Disable the smart receive tecnology (SRT)
*
* @param[in] dev device to use
*
*/
void at86rf2xx_disable_smart_idle(at86rf2xx_t *dev);
#ifdef __cplusplus
}
#endif

24
tests/driver_at86rf2xx/cmd.c
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@ -20,7 +20,7 @@
#include "net/netdev/ieee802154.h"
#include "net/ieee802154.h"
#include "at86rf2xx_internal.h"
#include "common.h"
#include "od.h"
@ -303,4 +303,26 @@ static int send(int iface, le_uint16_t dst_pan, uint8_t *dst, size_t dst_len,
return 0;
}
#if AT86RF2XX_SMART_IDLE_LISTENING
void random_net_api(uint8_t idx, uint32_t *value)
{
netdev_ieee802154_t *dev = &devs[idx].netdev;
dev->netdev.driver->get(&dev->netdev, NETOPT_RANDOM, value, sizeof(uint32_t));
}
int random_by_at86rf2xx(int argc, char **argv)
{
(void)argc;
(void)argv;
for (unsigned int i = 0; i < AT86RF2XX_NUM; i++) {
uint32_t test = 0;
at86rf2xx_get_random(&devs[i], (uint8_t *)&test, sizeof(test));
printf("Random number for device %u via native API: %" PRIx32 "\n", i, test);
test = 0;
random_net_api(i, &test);
printf("Random number for device %u via netopt: %" PRIx32 "\n", i, test);
}
return 0;
}
#endif
/** @} */

3
tests/driver_at86rf2xx/common.h
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@ -41,6 +41,9 @@ extern at86rf2xx_t devs[AT86RF2XX_NUM];
void recv(netdev_t *dev);
int ifconfig(int argc, char **argv);
int txtsnd(int argc, char **argv);
#if AT86RF2XX_RANDOM_NUMBER_GENERATOR
int random_by_at86rf2xx(int argc, char **argv);
#endif
void print_addr(uint8_t *addr, size_t addr_len);
/**
* @}

4
tests/driver_at86rf2xx/main.c
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@ -38,6 +38,9 @@ at86rf2xx_t devs[AT86RF2XX_NUM];
static const shell_command_t shell_commands[] = {
{ "ifconfig", "Configure netdev", ifconfig },
{ "txtsnd", "Send IEEE 802.15.4 packet", txtsnd },
#if AT86RF2XX_SMART_IDLE_LISTENING
{ "random", "Get a value from Random Number Generator", random_by_at86rf2xx },
#endif
{ NULL, NULL, NULL }
};
@ -87,7 +90,6 @@ void *_recv_thread(void *arg)
int main(void)
{
puts("AT86RF2xx device driver test");
unsigned dev_success = 0;
for (unsigned i = 0; i < AT86RF2XX_NUM; i++) {
const at86rf2xx_params_t *p = &at86rf2xx_params[i];