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CC26xx - fully shutdown the rf-core & abort rx op

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Prior to this patch, the ieee radio driver did not explicitly abort
the rx operation or power down the analog components of the radio
prior to shutting down the rf-core.

The result of this was that the rf-core continued to use a lot of
power even while "off".

This patch fixes this problem.
This commit is contained in:
Billy Kozak 2015-09-14 13:18:01 -06:00
parent 552408b241
commit 324d03b53c
2 changed files with 27 additions and 0 deletions
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2
cpu/cc26xx-cc13xx/rf-core/ieee-mode.c
View file

@ -1101,6 +1101,8 @@ off(void)
while(transmitting());
/* stopping the rx explicitly results in lower sleep-mode power usage */
rx_off();
rf_core_power_down();
/* Switch HF clock source to the RCOSC to preserve power */

25
cpu/cc26xx-cc13xx/rf-core/rf-core.c
View file

@ -201,6 +201,28 @@ rf_core_wait_cmd_done(void *cmd)
== RF_CORE_RADIO_OP_STATUS_DONE_OK;
}
/*---------------------------------------------------------------------------*/
static int
fs_powerdown(void)
{
rfc_CMD_FS_POWERDOWN_t cmd;
uint32_t cmd_status;
rf_core_init_radio_op((rfc_radioOp_t *)&cmd, sizeof(cmd), CMD_FS_POWERDOWN);
if(rf_core_send_cmd((uint32_t)&cmd, &cmd_status) != RF_CORE_CMD_OK) {
PRINTF("fs_powerdown: CMDSTA=0x%08lx\n", cmd_status);
return RF_CORE_CMD_ERROR;
}
if(rf_core_wait_cmd_done(&cmd) != RF_CORE_CMD_OK) {
PRINTF("fs_powerdown: CMDSTA=0x%08lx, status=0x%04x\n",
cmd_status, cmd.status);
return RF_CORE_CMD_ERROR;
}
return RF_CORE_CMD_OK;
}
/*---------------------------------------------------------------------------*/
int
rf_core_power_up()
{
@ -256,6 +278,9 @@ rf_core_power_down()
if(rf_core_is_accessible()) {
HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0x0;
HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIEN) = 0x0;
/* need to send FS_POWERDOWN or analog components will use power */
fs_powerdown();
}
/* Shut down the RFCORE clock domain in the MCU VD */