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Cellular: Add BG96 power control

pull/10588/head
Ari Parkkila 2019-05-16 00:00:48 -07:00
parent 93cb530b94
commit e49d7bbdcd
3 changed files with 82 additions and 50 deletions
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115
features/cellular/framework/targets/QUECTEL/BG96/QUECTEL_BG96.cpp
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@ -15,17 +15,17 @@
* limitations under the License.
*/
#include "rtos/ThisThread.h"
#include "QUECTEL_BG96.h"
#include "QUECTEL_BG96_CellularNetwork.h"
#include "QUECTEL_BG96_CellularStack.h"
#include "QUECTEL_BG96_CellularInformation.h"
#include "QUECTEL_BG96_CellularContext.h"
#include "CellularLog.h"
#include "DigitalOut.h"
#include "mbed_wait_api.h"
using namespace mbed;
using namespace events;
using namespace rtos;
#define CONNECT_DELIM "\r\n"
#define CONNECT_BUFFER_SIZE (1280 + 80 + 80) // AT response + sscanf format
@ -33,6 +33,18 @@ using namespace events;
#define DEVICE_READY_URC "CPIN:"
#if !defined(MBED_CONF_QUECTEL_BG96_PWR)
#define MBED_CONF_QUECTEL_BG96_PWR NC
#endif
#if !defined(MBED_CONF_QUECTEL_BG96_RST)
#define MBED_CONF_QUECTEL_BG96_RST NC
#endif
#if !defined(MBED_CONF_QUECTEL_BG96_POLARITY)
#define MBED_CONF_QUECTEL_BG96_POLARITY 1 // active high
#endif
static const intptr_t cellular_properties[AT_CellularBase::PROPERTY_MAX] = {
AT_CellularNetwork::RegistrationModeLAC, // C_EREG
AT_CellularNetwork::RegistrationModeLAC, // C_GREG
@ -51,11 +63,16 @@ static const intptr_t cellular_properties[AT_CellularBase::PROPERTY_MAX] = {
1, // PROPERTY_AT_CGEREP
};
QUECTEL_BG96::QUECTEL_BG96(FileHandle *fh) : AT_CellularDevice(fh)
QUECTEL_BG96::QUECTEL_BG96(FileHandle *fh, PinName pwr, bool active_high, PinName rst)
: AT_CellularDevice(fh),
_active_high(active_high),
_pwr(pwr, !_active_high),
_rst(rst, !_active_high)
{
AT_CellularBase::set_cellular_properties(cellular_properties);
}
AT_CellularNetwork *QUECTEL_BG96::open_network_impl(ATHandler &at)
{
return new QUECTEL_BG96_CellularNetwork(at);
@ -78,41 +95,42 @@ void QUECTEL_BG96::set_ready_cb(Callback<void()> callback)
nsapi_error_t QUECTEL_BG96::hard_power_on()
{
DigitalOut ModemResetIn (MBED_CONF_QUECTEL_BG96_PWR);
wait_ms(250);
ModemResetIn = 0;
wait_ms(250);
ModemResetIn = 1;
wait_ms(500);
if (_pwr.is_connected()) {
tr_info("Modem power on");
ThisThread::sleep_for(250);
_pwr = !_active_high;
ThisThread::sleep_for(250); // BG96_Hardware_Design_V1.1 says 100 ms, but 250 ms seems to be more robust
_pwr = _active_high;
ThisThread::sleep_for(500);
}
return NSAPI_ERROR_OK;
}
nsapi_error_t QUECTEL_BG96::soft_power_on()
{
// turn moden on
DigitalOut ModemPwrkey (MBED_CONF_QUECTEL_BG96_RST);
if (_rst.is_connected()) {
tr_info("Reset modem");
_rst = !_active_high;
ThisThread::sleep_for(100);
_rst = _active_high;
ThisThread::sleep_for(150 + 460); // RESET_N timeout from BG96_Hardware_Design_V1.1
_rst = !_active_high;
ThisThread::sleep_for(500);
ModemPwrkey = 0;
wait_ms(100);
ModemPwrkey = 1;
wait_ms(500);
ModemPwrkey = 0;
wait_ms(500);
// wait for RDY
_at->lock();
_at->set_at_timeout(10 * 1000);
_at->resp_start();
_at->set_stop_tag("RDY");
bool rdy = _at->consume_to_stop_tag();
_at->set_stop_tag(OK);
_at->restore_at_timeout();
_at->unlock();
// wait for RDY
_at->lock();
_at->set_at_timeout(60000);
_at->resp_start();
_at->set_stop_tag("RDY");
bool rdy = _at->consume_to_stop_tag();
_at->set_stop_tag(OK);
_at->unlock();
if (!rdy)
{
return NSAPI_ERROR_DEVICE_ERROR;
if (!rdy) {
return NSAPI_ERROR_DEVICE_ERROR;
}
}
return NSAPI_ERROR_OK;
@ -120,12 +138,12 @@ nsapi_error_t QUECTEL_BG96::soft_power_on()
nsapi_error_t QUECTEL_BG96::hard_power_off()
{
// turn moden off
DigitalOut ModemPwrkey (MBED_CONF_QUECTEL_BG96_PWR);
ModemPwrkey = 1;
wait_ms(250);
ModemPwrkey = 0;
if (_pwr.is_connected()) {
tr_info("Modem power off");
_pwr = _active_high;
ThisThread::sleep_for(650); // from BG96_Hardware_Design_V1.1
_pwr = !_active_high;
}
return NSAPI_ERROR_OK;
}
@ -142,30 +160,26 @@ nsapi_error_t QUECTEL_BG96::init()
_at->cmd_start("AT+CMEE=1"); // verbose responses
_at->cmd_stop_read_resp();
if (_at->get_last_error() != NSAPI_ERROR_OK)
{
do
{
if (_at->get_last_error() == NSAPI_ERROR_OK) {
do {
_at->cmd_start("AT+CFUN=1"); // set full functionality
_at->cmd_stop_read_resp();
// CFUN executed ok
if (_at->get_last_error() != NSAPI_ERROR_OK)
{
// CFUN executed ok
if (_at->get_last_error() != NSAPI_ERROR_OK) {
// wait some time that modem gets ready for CFUN command, and try again
retry++;
_at->flush();
wait_ms(64);
}
else
{
ThisThread::sleep_for(64); // experimental value
} else {
// yes continue
break;
}
/* code */
} while ( (retry < 3) );
} while ((retry < 3));
}
return _at->unlock_return_error();
}
@ -178,7 +192,10 @@ CellularDevice *CellularDevice::get_default_instance()
tr_debug("QUECTEL_BG96 flow control: RTS %d CTS %d", MBED_CONF_QUECTEL_BG96_RTS, MBED_CONF_QUECTEL_BG96_CTS);
serial.set_flow_control(SerialBase::RTSCTS, MBED_CONF_QUECTEL_BG96_RTS, MBED_CONF_QUECTEL_BG96_CTS);
#endif
static QUECTEL_BG96 device(&serial);
static QUECTEL_BG96 device(&serial,
MBED_CONF_QUECTEL_BG96_PWR,
MBED_CONF_QUECTEL_BG96_POLARITY,
MBED_CONF_QUECTEL_BG96_RST);
return &device;
}
#endif

9
features/cellular/framework/targets/QUECTEL/BG96/QUECTEL_BG96.h
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@ -27,13 +27,14 @@
#endif
#endif /* TARGET_FF_ARDUINO */
#include "DigitalOut.h"
#include "AT_CellularDevice.h"
namespace mbed {
class QUECTEL_BG96 : public AT_CellularDevice {
public:
QUECTEL_BG96(FileHandle *fh);
QUECTEL_BG96(FileHandle *fh, PinName pwr = NC, bool active_high = true, PinName rst = NC);
protected: // AT_CellularDevice
virtual AT_CellularNetwork *open_network_impl(ATHandler &at);
@ -47,6 +48,12 @@ protected: // AT_CellularDevice
public:
void handle_urc(FileHandle *fh);
private:
nsapi_error_t press_power_button(uint32_t timeout);
bool _active_high;
DigitalOut _pwr;
DigitalOut _rst;
};
} // namespace mbed
#endif // QUECTEL_BG96_H_

8
features/cellular/framework/targets/QUECTEL/BG96/mbed_lib.json
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@ -37,5 +37,13 @@
"help": "Provide as default CellularDevice [true/false]",
"value": false
}
},
"target_overrides": {
"MTB_STM_L475": {
"tx": "SERIAL_TX",
"rx": "SERIAL_RX",
"pwr": "PE_15",
"rst": "PE_9"
}
}
}