/*---------------------------------------------------------------------------*/
void
rf_core_power_down()
{
bool interrupts_disabled = ti_lib_int_master_disable();
ti_lib_int_disable(INT_RF_CPE0);
ti_lib_int_disable(INT_RF_CPE1);
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 */
ti_lib_prcm_domain_disable(PRCM_DOMAIN_RFCORE);
ti_lib_prcm_load_set();
while(!ti_lib_prcm_load_get());
/* Turn off RFCORE PD */
ti_lib_prcm_power_domain_off(PRCM_DOMAIN_RFCORE);
while(ti_lib_prcm_power_domain_status(PRCM_DOMAIN_RFCORE)
!= PRCM_DOMAIN_POWER_OFF);
ti_lib_int_pend_clear(INT_RF_CPE0);
ti_lib_int_pend_clear(INT_RF_CPE1);
ti_lib_int_enable(INT_RF_CPE0);
ti_lib_int_enable(INT_RF_CPE1);
if(!interrupts_disabled) {
ti_lib_int_master_enable();
}
}
/*---------------------------------------------------------------------------*/
static void wakeup_handler(void)
{
/* Turn on the PERIPH PD */
ti_lib_prcm_power_domain_on(PRCM_DOMAIN_PERIPH);
while ((ti_lib_prcm_power_domain_status(PRCM_DOMAIN_PERIPH)
!= PRCM_DOMAIN_POWER_ON)) ;
}
/*---------------------------------------------------------------------------*/
uint8_t
rf_core_is_accessible()
{
if(ti_lib_prcm_rf_ready() &&
ti_lib_prcm_power_domain_status(PRCM_DOMAIN_RFCORE) ==
PRCM_DOMAIN_POWER_ON) {
return RF_CORE_ACCESSIBLE;
}
return RF_CORE_NOT_ACCESSIBLE;
}
/*---------------------------------------------------------------------------*/
static void
power_domains_on(void)
{
/* Turn on relevant power domains */
ti_lib_prcm_power_domain_on(PRCM_DOMAINS);
/* Wait for domains to power on */
while((ti_lib_prcm_power_domain_status(PRCM_DOMAINS)
!= PRCM_DOMAIN_POWER_ON));
}
/*---------------------------------------------------------------------------*/
static void
power_and_clock(void)
{
/* Power on the SERIAL PD */
ti_lib_prcm_power_domain_on(PRCM_DOMAIN_SERIAL);
while(ti_lib_prcm_power_domain_status(PRCM_DOMAIN_SERIAL)
!= PRCM_DOMAIN_POWER_ON);
/* Enable UART clock in active mode */
ti_lib_prcm_peripheral_run_enable(PRCM_PERIPH_UART0);
ti_lib_prcm_load_set();
while(!ti_lib_prcm_load_get());
}
/*
* Returns 0 if either the SERIAL PD is off, or the PD is on but the run mode
* clock is gated. If this function would return 0, accessing UART registers
* will return a precise bus fault. If this function returns 1, it is safe to
* access UART registers.
*
* This function only checks the 'run mode' clock gate, since it can only ever
* be called with the MCU in run mode.
*/
static bool
accessible(void)
{
/* First, check the PD */
if(ti_lib_prcm_power_domain_status(PRCM_DOMAIN_SERIAL)
!= PRCM_DOMAIN_POWER_ON) {
return false;
}
/* Then check the 'run mode' clock gate */
if(!(HWREG(PRCM_BASE + PRCM_O_UARTCLKGR) & PRCM_UARTCLKGR_CLK_EN)) {
return false;
}
return true;
}
/*---------------------------------------------------------------------------*/
void
board_i2c_wakeup()
{
/* First, make sure the SERIAL PD is on */
ti_lib_prcm_power_domain_on(PRCM_DOMAIN_SERIAL);
while((ti_lib_prcm_power_domain_status(PRCM_DOMAIN_SERIAL)
!= PRCM_DOMAIN_POWER_ON));
/* Enable the clock to I2C */
ti_lib_prcm_peripheral_run_enable(PRCM_PERIPH_I2C0);
ti_lib_prcm_load_set();
while(!ti_lib_prcm_load_get());
/* Enable and initialize the I2C master module */
ti_lib_i2c_master_init_exp_clk(I2C0_BASE, ti_lib_sys_ctrl_clock_get(),
true);
}
/*---------------------------------------------------------------------------*/
int
rf_core_power_up()
{
uint32_t cmd_status;
bool interrupts_disabled = ti_lib_int_master_disable();
ti_lib_int_pend_clear(INT_RF_CPE0);
ti_lib_int_pend_clear(INT_RF_CPE1);
ti_lib_int_disable(INT_RF_CPE0);
ti_lib_int_disable(INT_RF_CPE1);
/* Enable RF Core power domain */
ti_lib_prcm_power_domain_on(PRCM_DOMAIN_RFCORE);
while(ti_lib_prcm_power_domain_status(PRCM_DOMAIN_RFCORE)
!= PRCM_DOMAIN_POWER_ON);
ti_lib_prcm_domain_enable(PRCM_DOMAIN_RFCORE);
ti_lib_prcm_load_set();
while(!ti_lib_prcm_load_get());
while(!rf_core_is_accessible()) {
PRINTF("rf_core_power_up: Not ready\n");
}
HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIFG) = 0x0;
HWREG(RFC_DBELL_NONBUF_BASE + RFC_DBELL_O_RFCPEIEN) = 0x0;
ti_lib_int_enable(INT_RF_CPE0);
ti_lib_int_enable(INT_RF_CPE1);
if(!interrupts_disabled) {
ti_lib_int_master_enable();
}
/* Let CPE boot */
HWREG(RFC_PWR_NONBUF_BASE + RFC_PWR_O_PWMCLKEN) = RF_CORE_CLOCKS_MASK;
/* Send ping (to verify RFCore is ready and alive) */
if(rf_core_send_cmd(CMDR_DIR_CMD(CMD_PING), &cmd_status) != RF_CORE_CMD_OK) {
PRINTF("rf_core_power_up: CMD_PING fail, CMDSTA=0x%08lx\n", cmd_status);
return RF_CORE_CMD_ERROR;
}
return RF_CORE_CMD_OK;
}
