Contiki-NG
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Driver implementation for the cc2538 RF transceiver. More...
Files | |
file | cc2538-rf.c |
Implementation of the cc2538 RF driver. | |
file | cc2538-rf.h |
Header file for the cc2538 RF driver. | |
Macros | |
#define | CC2538_RF_CSP_ISRXON() do { REG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISRXON; } while(0) |
Send an RX ON command strobe to the CSP. | |
#define | CC2538_RF_CSP_ISTXON() do { REG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISTXON; } while(0) |
Send a TX ON command strobe to the CSP. | |
#define | CC2538_RF_CSP_ISRFOFF() do { REG(RFCORE_SFR_RFST) = CC2538_RF_CSP_OP_ISRFOFF; } while(0) |
Send a RF OFF command strobe to the CSP. | |
#define | CC2538_RF_CSP_ISFLUSHRX() |
Flush the RX FIFO. | |
#define | CC2538_RF_CSP_ISFLUSHTX() |
Flush the TX FIFO. | |
Functions | |
static uint8_t | get_channel () |
Get the current operating channel. More... | |
static void | set_channel (uint8_t channel) |
Set the current operating channel. More... | |
static radio_value_t | get_rssi (void) |
Reads the current signal strength (RSSI) More... | |
static int | init (void) |
PROCESS_THREAD (cc2538_rf_process, ev, data) | |
Implementation of the cc2538 RF driver process. More... | |
void | cc2538_rf_rx_tx_isr (void) |
The cc2538 RF RX/TX ISR. More... | |
void | cc2538_rf_err_isr (void) |
The cc2538 RF Error ISR. More... | |
void | cc2538_rf_set_addr (uint16_t pan) |
Sets addresses and PAN identifier to the relevant RF hardware registers. More... | |
Variables | |
const struct radio_driver | cc2538_rf_driver |
The NETSTACK data structure for the cc2538 RF driver. | |
const struct radio_driver | cc2538_rf_driver |
The NETSTACK data structure for the cc2538 RF driver. | |
Driver implementation for the cc2538 RF transceiver.
void cc2538_rf_err_isr | ( | void | ) |
The cc2538 RF Error ISR.
This is the interrupt service routine for all RF errors. We acknowledge every error type and instead of trying to be smart and act differently depending on error condition, we simply reset the transceiver. RX FIFO overflow is an exception, we ignore this error since read() handles it anyway.
However, we don't want to reset within this ISR. If the error occurs while we are reading a frame out of the FIFO, trashing the FIFO in the middle of read(), would result in further errors (RX underflows).
Instead, we set a flag and poll the driver process. The process will reset the transceiver without any undesirable consequences.
Definition at line 1185 of file cc2538-rf.c.
void cc2538_rf_rx_tx_isr | ( | void | ) |
The cc2538 RF RX/TX ISR.
This is the interrupt service routine for all RF interrupts relating to RX and TX. Error conditions are handled by cc2538_rf_err_isr(). Currently, we only acknowledge the FIFOP interrupt source.
Definition at line 1158 of file cc2538-rf.c.
void cc2538_rf_set_addr | ( | uint16_t | pan | ) |
Sets addresses and PAN identifier to the relevant RF hardware registers.
pan | The PAN Identifier |
Values for short and extended addresses are not needed as parameters since they exist in the linkaddr buffer in the contiki core. They are thus simply copied over from there.
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Get the current operating channel.
Definition at line 165 of file cc2538-rf.c.
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Reads the current signal strength (RSSI)
This function reads the current RSSI on the currently configured channel.
Definition at line 233 of file cc2538-rf.c.
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TX anti-aliasing filter bandwidth
AGC target value
Bias currents
Tune frequency calibration
Definition at line 521 of file cc2538-rf.c.
PROCESS_THREAD | ( | cc2538_rf_process | , |
ev | , | ||
data | |||
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Implementation of the cc2538 RF driver process.
This process is started by init(). It simply sits there waiting for an event. Upon frame reception, the RX ISR will poll this process. Subsequently, the contiki core will generate an event which will call this process so that the received frame can be picked up from the RF RX FIFO
Definition at line 1107 of file cc2538-rf.c.
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Set the current operating channel.
channel | The desired channel as a value in [11,26] |
Definition at line 175 of file cc2538-rf.c.