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/*
* Copyright (c) 2016 Brian Swetland
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <app.h>
#include <debug.h>
#include <reg.h>
#include <kernel/thread.h>
#include <kernel/event.h>
#include <arch/arm/cm.h>
#include <driverlib/prcm.h>
#include <driverlib/rfc.h>
#include <driverlib/rf_mailbox.h>
#include <inc/hw_rfc_dbell.h>
#include <rf_patches/rf_patch_cpe_genfsk.h>
#include <platform/radio.h>
#define RADIO_POLLED_MODE 0
#define CPE0_MASK (IRQ_BOOT_DONE | IRQ_RX_OK | IRQ_LAST_COMMAND_DONE | IRQ_COMMAND_DONE)
static event_t ack_evt = EVENT_INITIAL_VALUE(ack_evt, 0, EVENT_FLAG_AUTOUNSIGNAL);
static event_t cpe0_evt = EVENT_INITIAL_VALUE(cpe0_evt, 0, EVENT_FLAG_AUTOUNSIGNAL);
void ti_cc_rfc_cpe_0_irq(void) {
arm_cm_irq_entry();
event_signal(&cpe0_evt, false);
// disable IRQ until thread handles and re-enables them in response to event
NVIC_DisableIRQ(rfc_cpe_0_IRQn);
// reschedule if we woke a thread (indicated by !signaled)
arm_cm_irq_exit(!cpe0_evt.signaled);
}
static inline uint32_t cpe0_reason(void) {
uint32_t n = HWREG(RFC_DBELL_BASE + RFC_DBELL_O_RFCPEIFG) & CPE0_MASK;
HWREG(RFC_DBELL_BASE + RFC_DBELL_O_RFCPEIFG) = ~n;
return n;
}
static inline uint32_t cpe0_wait_irq(void) {
NVIC_EnableIRQ(rfc_cpe_0_IRQn);
event_wait(&cpe0_evt);
return cpe0_reason();
}
void ti_cc_rfc_cpe_1_irq(void) {
arm_cm_irq_entry();
}
void ti_cc_rfc_cmd_ack_irq(void) {
arm_cm_irq_entry();
HWREG(RFC_DBELL_BASE + RFC_DBELL_O_RFACKIFG) = 0;
event_signal(&ack_evt, false);
// reschedule if we woke a thread (indicated by !signaled)
arm_cm_irq_exit(!ack_evt.signaled);
}
uint32_t radio_send_cmd(uint32_t cmd) {
#if RADIO_POLLED_MODE
while (HWREG(RFC_DBELL_BASE + RFC_DBELL_O_CMDR) != 0) {}
HWREG(RFC_DBELL_BASE + RFC_DBELL_O_RFACKIFG) = 0;
HWREG(RFC_DBELL_BASE + RFC_DBELL_O_CMDR) = cmd;
while (!HWREG(RFC_DBELL_BASE + RFC_DBELL_O_RFACKIFG)) {}
HWREG(RFC_DBELL_BASE + RFC_DBELL_O_RFACKIFG) = 0;
return HWREG(RFC_DBELL_BASE + RFC_DBELL_O_CMDSTA);
#else
while(HWREG(RFC_DBELL_BASE + RFC_DBELL_O_CMDR) != 0) {}
HWREG(RFC_DBELL_BASE + RFC_DBELL_O_RFACKIFG) = 0;
event_unsignal(&ack_evt);
HWREG(RFC_DBELL_BASE + RFC_DBELL_O_CMDR) = cmd;
event_wait(&ack_evt);
#endif
return HWREG(RFC_DBELL_BASE + RFC_DBELL_O_CMDSTA);
}
void radio_wait_cmd(uint16_t *status) {
uint32_t addr = (uint32_t) status;
uint16_t val;
#if RADIO_POLLED_MODE
for (;;) {
val = *REG16(addr);
if (val < 3) {
// idle, waiting to start, or running
thread_yield();
} else {
break;
}
}
#else
for (;;) {
uint32_t x = cpe0_wait_irq();
val = *REG16(addr);
if (val > 3) {
break;
}
}
#endif
if ((val != 0x0400) && (val != 0x3400)) {
dprintf(INFO, "Cmd Status %04x\n", val);
}
}
void radio_init(void) {
#if !RADIO_POLLED_MODE
// route all IRQs to CPE0
HWREG(RFC_DBELL_BASE + RFC_DBELL_O_RFCPEISL) = 0;
HWREG(RFC_DBELL_BASE + RFC_DBELL_O_RFCPEIEN) = CPE0_MASK;
// clear any pending
HWREG(RFC_DBELL_BASE + RFC_DBELL_O_RFCPEIFG) = 0;
HWREG(RFC_DBELL_BASE + RFC_DBELL_O_RFACKIFG) = 0;
//NVIC_EnableIRQ(rfc_cpe_0_IRQn);
//NVIC_EnableIRQ(rfc_cpe_1_IRQn);
NVIC_EnableIRQ(rfc_cmd_ack_IRQn);
#endif
// Power RF domain
PRCMPowerDomainOn(PRCM_DOMAIN_RFCORE);
while (PRCMPowerDomainStatus(PRCM_DOMAIN_RFCORE) != PRCM_DOMAIN_POWER_ON) ;
dprintf(INFO, "power on\n");
// enable the RF top clock
PRCMDomainEnable(PRCM_DOMAIN_RFCORE);
PRCMLoadSet();
dprintf(INFO, "top clock on\n");
// enable all RF sub clocks
RFCClockEnable();
dprintf(INFO, "clocks on\n");
thread_sleep(1000);
rf_patch_cpe_genfsk();
dprintf(INFO, "patched\n");
unsigned n = radio_send_cmd(IMM_CMD(CMD_PING, 0, 0));
dprintf(INFO, "RESPONSE %08x\n", n);
n = radio_send_cmd(IMM_CMD(CMD_PING, 0, 0));
dprintf(INFO, "RESPONSE %08x\n", n);
rf_op_fw_info_t fwinfo;
memset(&fwinfo, 0, sizeof(fwinfo));
fwinfo.cmd = CMD_GET_FW_INFO;
n = radio_send_cmd((uint32_t) &fwinfo);
dprintf(INFO, "FW %d %04x %04x %04x %04x\n",
n, fwinfo.version, fwinfo.free_ram_start,
fwinfo.free_ram_size, fwinfo.avail_rat_ch);
n = radio_send_cmd(IMM_CMD(CMD_START_RAT, 0, 0));
dprintf(INFO, "START RAT %d\n", n);
}
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