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Cellular change only: support LEXI-R422 and LEXI-R52 (#1195)
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Support is provided for LEXI-R422, a small form-factor version of SARA-R422, and LEXI-R52, a small form-factor version of SARA-R52. The chief change in the LEXI variants is GPIO numbering/mapping and hence a new GPIO function is introduced, uCellGpioConfigSpecialFunction(), to take advantage of the additional flexibility.
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@sakrubx
sakrubx authored Jul 4, 2024
1 parent a9f1d6a commit cf88bb6
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Showing 27 changed files with 443 additions and 139 deletions.
84 changes: 83 additions & 1 deletion cell/api/u_cell_gpio.h
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,7 @@ extern "C" {

/** The GPIO names, which map to GPIO IDs. Note that not all
* modules support all GPIOs.
*
* For LEXI variants the GPIO mapping is a bit different.
*/
typedef enum {
Expand All @@ -101,11 +102,53 @@ typedef enum {
U_CELL_GPIO_LEXI_10 = 26
} uCellGpioName_t;

/** The special GPIO functions; not all special GPIO functions
* are supported by all modules and in some cases only certain
* pins are able to support certain special functions; refer to
* the interface manual of your module for details.
*/
typedef enum {
U_CELL_GPIO_SPECIAL_FUNCTION_NETWORK_STATUS_INDICATION = 2,
U_CELL_GPIO_SPECIAL_FUNCTION_EXTERNAL_GNSS_SUPPLY_ENABLE = 3,
U_CELL_GPIO_SPECIAL_FUNCTION_EXTERNAL_GNSS_DATA_READY = 4,
U_CELL_GPIO_SPECIAL_FUNCTION_EXTERNAL_GNSS_RTC_SHARING = 5,
U_CELL_GPIO_SPECIAL_FUNCTION_JAMMING_DETECTION_INDICATION = 6,
U_CELL_GPIO_SPECIAL_FUNCTION_SIM_CARD_DETECTION = 7,
U_CELL_GPIO_SPECIAL_FUNCTION_HEADSET_DETECTION = 8,
U_CELL_GPIO_SPECIAL_FUNCTION_GSM_TX_BURST_INDICATION = 9,
U_CELL_GPIO_SPECIAL_FUNCTION_MODULE_STATUS_INDICATION = 10,
U_CELL_GPIO_SPECIAL_FUNCTION_MODULE_OPERATING_MODE_INDICATION = 11,
U_CELL_GPIO_SPECIAL_FUNCTION_I2S_DIGITAL_AUDIO_INTERFACE = 12,
U_CELL_GPIO_SPECIAL_FUNCTION_SPI_SERIAL_INTERFACE = 13,
U_CELL_GPIO_SPECIAL_FUNCTION_MASTER_CLOCK_GENERATION = 14,
U_CELL_GPIO_SPECIAL_FUNCTION_UART_INTERFACE = 15,
U_CELL_GPIO_SPECIAL_FUNCTION_WIFI_ENABLE = 16,
U_CELL_GPIO_SPECIAL_FUNCTION_RING_INDICATOR = 17,
U_CELL_GPIO_SPECIAL_FUNCTION_LAST_GASP = 18,
U_CELL_GPIO_SPECIAL_FUNCTION_EXTERNAL_GNSS_ANTENNA_OR_LNA_CONTROL = 19,
U_CELL_GPIO_SPECIAL_FUNCTION_TIME_PULSE_GNSS = 20,
U_CELL_GPIO_SPECIAL_FUNCTION_TIME_PULSE_OUTPUT = 21,
U_CELL_GPIO_SPECIAL_FUNCTION_TIME_STAMP_OF_EXTERNAL_INTERRUPT = 22,
U_CELL_GPIO_SPECIAL_FUNCTION_FAST_POWER_OFF = 23,
U_CELL_GPIO_SPECIAL_FUNCTION_LWM2M_PULSE = 24,
U_CELL_GPIO_SPECIAL_FUNCTION_HARDWARE_FLOW_CONTROL = 25,
U_CELL_GPIO_SPECIAL_FUNCTION_ANTENNA_DYNAMIC_TUNING = 26,
U_CELL_GPIO_SPECIAL_FUNCTION_EXTERNAL_GNSS_TIME_PULSE_INPUT = 27,
U_CELL_GPIO_SPECIAL_FUNCTION_EXTERNAL_GNSS_TIME_STAMP_OF_EXTERNAL_INTERRUPT = 28,
U_CELL_GPIO_SPECIAL_FUNCTION_DTR_POWER_SAVING = 29,
U_CELL_GPIO_SPECIAL_FUNCTION_32_KHZ_OUTPUT = 30,
U_CELL_GPIO_SPECIAL_FUNCTION_SAFE_MEMORY_AND_POWER_OFF = 31,
U_CELL_GPIO_SPECIAL_FUNCTION_UPSV_CONTROL = 32,
U_CELL_GPIO_SPECIAL_FUNCTION_PAD_DISABLED = 255
} uCellGpioSpecialFunction_t;

/* ----------------------------------------------------------------
* FUNCTIONS
* -------------------------------------------------------------- */

/** Configure a GPIO of a cellular module.
/** Configure a GPIO of a cellular module as an input, or an output
* with level 0 or 1.
*
* VERY IMPORTANT: adopting the terminology of the u-blox AT commmand
* manual, each cellular module pin may be referred to in three ways:
*
Expand All @@ -122,6 +165,9 @@ typedef enum {
* (i.e. 16 etc., the ones which usually map to the physical pin
* number) and that will also work fine.
*
* Note: configuring a pin as a GPIO cancels any special function set up
* with uCellGpioConfigSpecialFunction().
*
* @param cellHandle the handle of the cellular instance.
* @param gpioId the GPIO ID to set.
* @param isOutput the direction, set to true for an output, false for
Expand All @@ -133,7 +179,42 @@ typedef enum {
int32_t uCellGpioConfig(uDeviceHandle_t cellHandle, uCellGpioName_t gpioId,
bool isOutput, int32_t level);

/** Configure a GPIO of a cellular module to have a special function, i.e.
* not an application-controlled input/ouput but instead activated by the
* module itself when special things happen e.g. controlling or receiving
* input from an external GNSS chip, providing a time pulse output or
* time-stamping an input (SARA-R5/LEXI-R5 only) etc.
*
* VERY IMPORTANT: adopting the terminology of the u-blox AT commmand
* manual, each cellular module pin may be referred to in three ways:
*
* - pin number: the physical pin of the cellular module,
* - GPIO ID: the ID for that pin, which is usually THE SAME AS
* THE PIN NUMBER,
* - pin name: for instance "GPIO1" or "SDIO_CMD" etc.
*
* This API uses GPIO ID: do not confuse this with the number on
* the end of the pin name, i.e. "GPIO1" is NOT GPIO ID 1, it is GPIO
* ID 16! Hence the #uCellGpioName_t enum is used to allow you to
* pass in #U_CELL_GPIO_1, the value for which is 16. If you prefer
* to use plain integers in your code you can just pass in the GPIO IDs
* (i.e. 16 etc., the ones which usually map to the physical pin
* number) and that will also work fine.
*
* Note: to configure a pin as an input or output controlled by this MCU
* once more, call uCellGpioConfig().
*
* @param cellHandle the handle of the cellular instance.
* @param gpioId the GPIO ID to set.
* @param specialFunction the special function to adopt.
* @return zero on success else negative error code.
*/
int32_t uCellGpioConfigSpecialFunction(uDeviceHandle_t cellHandle,
uCellGpioName_t gpioId,
uCellGpioSpecialFunction_t specialFunction);

/** Set the state of a GPIO of a cellular module.
*
* VERY IMPORTANT: adopting the terminology of the u-blox AT commmand
* manual, each cellular module pin may be referred to in three ways:
*
Expand All @@ -159,6 +240,7 @@ int32_t uCellGpioSet(uDeviceHandle_t cellHandle, uCellGpioName_t gpioId,
int32_t level);

/** Get the state of a GPIO of a cellular module.
*
* VERY IMPORTANT: adopting the terminology of the u-blox AT commmand
* manual, each cellular module pin may be referred to in three ways:
*
Expand Down
2 changes: 2 additions & 0 deletions cell/api/u_cell_module_type.h
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Original file line number Diff line number Diff line change
Expand Up @@ -92,6 +92,8 @@ typedef enum {
U_CELL_MODULE_TYPE_LENA_R8 = 8,
U_CELL_MODULE_TYPE_SARA_R52 = 9,
U_CELL_MODULE_TYPE_LEXI_R10 = 10,
U_CELL_MODULE_TYPE_LEXI_R422 = 11,
U_CELL_MODULE_TYPE_LEXI_R52 = 12,
// Add any new module types here, before U_CELL_MODULE_TYPE_ANY, assigning
// them to specific values.
// IMPORTANT IMPORTANT IMPORTANT IMPORTANT IMPORTANT: see note above.
Expand Down
48 changes: 33 additions & 15 deletions cell/api/u_cell_time.h
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Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,7 @@
* high accuracy. In other words, the functions are about
* timING, using an arbitrary time-base, and NOT about absolute
* clock/calender time. This API is only currently supported by
* SARA-R5 modules.
* LEXI-R5/SARA-R5 modules.
*
* These functions are thread-safe with the proviso that a cellular
* instance should not be accessed before it has been added or after
Expand Down Expand Up @@ -212,11 +212,23 @@ typedef struct {
* FUNCTIONS: CELLTIME
* -------------------------------------------------------------- */

/** Enable CellTime, only supported on SARA-R5. CellTime is about
/** Enable CellTime, only supported on SARA-R5/LEXI-R5. CellTime is about
* using the highly accurate cellular network for timing of hardware,
* using an arbitrary time-base, it is NOT about absolute clock/calender
* time (UTC or local).
*
* IMPORTANT: in the case of SARA-R5 the pins of the cellular module
* used to signal time pulse output (in #U_CELL_TIME_MODE_PULSE or
* #U_CELL_TIME_MODE_ONE_SHOT mode), receive an EXT_INT input
* (in #U_CELL_TIME_MODE_EXT_INT_TIMESTAMP mode) or provide an external
* GNSS device connected to the cellular module with a time pulse
* input are fixed at pin number/GPIO ID 19 ("GPIO6"),
* pin number/GPIO ID 33 ("EXT_INT") and pin number.GPIO ID 46
* ("SDIO_CMD") respectively. HOWEVER in the case of LEXI-R5 there
* is no fixed pin for these functions and hence it is up to the
* application to configure those pins, as required with calls to
* uCellGpioConfigSpecialFunction().
*
* If this function returns success it doesn't necessarily mean that
* the requested CellTime operation has succeeded, since the operation
* may take a while to complete: please monitor pCallback for progress
Expand All @@ -228,23 +240,29 @@ typedef struct {
* first.
*
* Any time pulse will appear on pin number/GPIO ID 19, pin name
* "GPIO6" of the cellular module. If the mode is
* #U_CELL_TIME_MODE_PULSE then for SARA-R5xx-00B the pulse width
* is fixed at 3 ms and the period 1 second while for SARA-R5xx-01B and
* later the pulse will be of duration #U_CELL_TIME_PULSE_WIDTH_MILLISECONDS
* and period #U_CELL_TIME_PULSE_PERIOD_SECONDS. If the mode is
* "GPIO6" of SARA-R5, or in the case of LEXI-R5 pin on a pin that
* the application selects using uCellGpioConfigSpecialFunction().
* If the mode is #U_CELL_TIME_MODE_PULSE then for SARA-R5xx-00B the
* pulse width is fixed at 3 ms and the period 1 second while for
* SARA-R5xx-01B and later the pulse will be of duration
* #U_CELL_TIME_PULSE_WIDTH_MILLISECONDS and period
* #U_CELL_TIME_PULSE_PERIOD_SECONDS. If the mode is
* #U_CELL_TIME_MODE_EXT_INT_TIMESTAMP then the input pin is
* the "EXT_INT" pin of the cellular module, pin number/GPIO ID 33.
* the "EXT_INT" pin of the cellular module, pin number/GPIO ID 33, or
* in the case of LEXI-R5 a pin that the application selects through
* calling uCellGpioConfigSpecialFunction().
*
* If the GNSS device is external to the cellular module, two additional
* pins must be connected: pin number/GPIO ID 46, pin name "SDIO_CMD",
* must be connected to the GNSS device TIMEPULSE output and pin
* number/GPIO ID 25, pin name "GPIO4", must be conncted to the
* GNSS device EXTINT output.
* pins must be connected: pin number/GPIO ID 46, pin name "SDIO_CMD"
* (or if LEXI-R5 then a pin that the application selects through
* calling uCellGpioConfigSpecialFunction()), must be connected to the
* GNSS device TIMEPULSE output and pin number/GPIO ID 25, pin name "GPIO4",
* (or if LEXI-R5 then pin number/GPIO ID 17, still pin name "GPIO4" but
* for LEXI), must be conncted to the GNSS device EXTINT output.
*
* If uCellGpioConfig() had previously been called to use the pins
* in question as user-controllable pins, this will override that
* setting.
* Where the pins are fixed, if uCellGpioConfigSpecialFunction() had previously been
* called to use the pins in question as user-controllable pins, this
* will override that setting.
*
* If the GNSS device available to the cellular module is already in
* use for something else (e.g. used by the GNSS API or by Cell Locate)
Expand Down
4 changes: 2 additions & 2 deletions cell/src/u_cell_cfg.c
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Original file line number Diff line number Diff line change
Expand Up @@ -916,7 +916,7 @@ static int32_t setRatSaraRx(uCellPrivateInstance_t *pInstance,
uAtClientHandle_t atHandle = pInstance->atHandle;
int32_t cFunMode = -1;

if (U_CELL_PRIVATE_MODULE_IS_SARA_R5(pInstance->pModule->moduleType)) {
if (U_CELL_PRIVATE_MODULE_IS_R5(pInstance->pModule->moduleType)) {
// For SARA-R5 the module has to be in state AT+CFUN=0
cFunMode = uCellPrivateCFunGet(pInstance);
if (cFunMode != 0) {
Expand Down Expand Up @@ -979,7 +979,7 @@ static int32_t setRatRankSaraRx(uCellPrivateInstance_t *pInstance,
}
}

if (U_CELL_PRIVATE_MODULE_IS_SARA_R5(pInstance->pModule->moduleType)) {
if (U_CELL_PRIVATE_MODULE_IS_R5(pInstance->pModule->moduleType)) {
// For SARA-R5 the module has to be in state AT+CFUN=0
cFunMode = uCellPrivateCFunGet(pInstance);
if (cFunMode != 0) {
Expand Down
4 changes: 2 additions & 2 deletions cell/src/u_cell_file.c
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Original file line number Diff line number Diff line change
Expand Up @@ -396,7 +396,7 @@ int32_t uCellFileRead(uDeviceHandle_t cellHandle,
}
uAtClientCommandStop(atHandle);
// Grab the response
if (U_CELL_PRIVATE_MODULE_IS_SARA_R4(pInstance->pModule->moduleType)) {
if (U_CELL_PRIVATE_MODULE_IS_R4(pInstance->pModule->moduleType)) {
// SARA-R4 only puts \n before the
// response, not \r\n as it should
uAtClientResponseStart(atHandle, "\n+URDFILE:");
Expand Down Expand Up @@ -553,7 +553,7 @@ int32_t uCellFileBlockRead(uDeviceHandle_t cellHandle,
uAtClientWriteInt(atHandle, (int32_t) dataSize);
uAtClientCommandStop(atHandle);
// Grab the response
if (U_CELL_PRIVATE_MODULE_IS_SARA_R4(pInstance->pModule->moduleType)) {
if (U_CELL_PRIVATE_MODULE_IS_R4(pInstance->pModule->moduleType)) {
// SARA-R4 only puts \n before the
// response, not \r\n as it should
uAtClientResponseStart(atHandle, "\n+URDBLOCK:");
Expand Down
57 changes: 43 additions & 14 deletions cell/src/u_cell_gpio.c
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Original file line number Diff line number Diff line change
Expand Up @@ -68,6 +68,24 @@
* STATIC FUNCTIONS
* -------------------------------------------------------------- */

// Configure a GPIO.
static int32_t config(uAtClientHandle_t atHandle, uCellGpioName_t gpioId,
int32_t function, int32_t level)
{
uAtClientLock(atHandle);
uAtClientCommandStart(atHandle, "AT+UGPIOC=");
// Write GPIO ID
uAtClientWriteInt(atHandle, (int32_t) gpioId);
// Write function
uAtClientWriteInt(atHandle, function);
if (level >= 0) {
// Write initial output value
uAtClientWriteInt(atHandle, level);
}
uAtClientCommandStopReadResponse(atHandle);
return uAtClientUnlock(atHandle);
}

/* ----------------------------------------------------------------
* PUBLIC FUNCTIONS
* -------------------------------------------------------------- */
Expand All @@ -78,28 +96,39 @@ int32_t uCellGpioConfig(uDeviceHandle_t cellHandle, uCellGpioName_t gpioId,
{
int32_t errorCode = (int32_t) U_ERROR_COMMON_INVALID_PARAMETER;
uCellPrivateInstance_t *pInstance;
uAtClientHandle_t atHandle;

if (gUCellPrivateMutex != NULL) {

U_PORT_MUTEX_LOCK(gUCellPrivateMutex);

pInstance = pUCellPrivateGetInstance(cellHandle);
if ((pInstance != NULL) && ((int32_t) gpioId >= 0)) {
atHandle = pInstance->atHandle;
errorCode = config(pInstance->atHandle, gpioId,
isOutput ? 0 : 1,
isOutput ? level : -1);
}

uAtClientLock(atHandle);
uAtClientCommandStart(atHandle, "AT+UGPIOC=");
// Write GPIO ID.
uAtClientWriteInt(atHandle, (int32_t) gpioId);
// Write GPIO direction.
uAtClientWriteInt(atHandle, isOutput ? 0 : 1);
if (isOutput) {
// Write initial output value
uAtClientWriteInt(atHandle, level);
}
uAtClientCommandStopReadResponse(atHandle);
errorCode = uAtClientUnlock(atHandle);
U_PORT_MUTEX_UNLOCK(gUCellPrivateMutex);
}

return errorCode;
}

// Configure a pin of a cellular module to have a special function.
int32_t uCellGpioConfigSpecialFunction(uDeviceHandle_t cellHandle,
uCellGpioName_t gpioId,
uCellGpioSpecialFunction_t specialFunction)
{
int32_t errorCode = (int32_t) U_ERROR_COMMON_INVALID_PARAMETER;
uCellPrivateInstance_t *pInstance;

if (gUCellPrivateMutex != NULL) {

U_PORT_MUTEX_LOCK(gUCellPrivateMutex);

pInstance = pUCellPrivateGetInstance(cellHandle);
if ((pInstance != NULL) && ((int32_t) gpioId >= 0)) {
errorCode = config(pInstance->atHandle, gpioId, specialFunction, -1);
}

U_PORT_MUTEX_UNLOCK(gUCellPrivateMutex);
Expand Down
2 changes: 2 additions & 0 deletions cell/src/u_cell_info.c
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Original file line number Diff line number Diff line change
Expand Up @@ -761,9 +761,11 @@ int32_t uCellInfoRefreshRadioParameters(uDeviceHandle_t cellHandle)
switch (pInstance->pModule->moduleType) {
case U_CELL_MODULE_TYPE_SARA_R5:
case U_CELL_MODULE_TYPE_SARA_R52:
case U_CELL_MODULE_TYPE_LEXI_R52:
errorCode = getRadioParamsUcged2SaraR5(atHandle, pRadioParameters);
break;
case U_CELL_MODULE_TYPE_SARA_R422:
case U_CELL_MODULE_TYPE_LEXI_R422:
errorCode = getRadioParamsUcged2SaraR422(atHandle, pRadioParameters);
break;
case U_CELL_MODULE_TYPE_LARA_R6:
Expand Down
12 changes: 6 additions & 6 deletions cell/src/u_cell_mqtt.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -496,7 +496,7 @@ static void UUMQTTC_UUMQTTSNC_urc(uAtClientHandle_t atHandle,
uAtClientReadString(atHandle, (char *) pUrcStatus->topicNameShort,
sizeof(pUrcStatus->topicNameShort), false);
}
if (U_CELL_PRIVATE_MODULE_IS_SARA_R4(pInstance->pModule->moduleType)) {
if (U_CELL_PRIVATE_MODULE_IS_R4(pInstance->pModule->moduleType)) {
// On SARA-R4, 0 to 2 mean success
if ((urcParam1 >= 0) && (urcParam1 <= 2) &&
(urcParam2 >= 0)) {
Expand Down Expand Up @@ -803,7 +803,7 @@ static void UUMQTT_urc(uAtClientHandle_t atHandle,
// Sort out if this is "+UUMQTTC:"/"+UUMQTTSNC:"
// or "+UUMQTTx:" or [SARA-R4 only] "+UUMQTTCM:"
if (uAtClientReadBytes(atHandle, bytes, sizeof(bytes), true) == sizeof(bytes)) {
if (U_CELL_PRIVATE_MODULE_IS_SARA_R4(pInstance->pModule->moduleType)) {
if (U_CELL_PRIVATE_MODULE_IS_R4(pInstance->pModule->moduleType)) {
if (bytes[0] == 'C') {
// Either "+UUMQTTC" or "+UUMQTTCM"
if (bytes[1] == 'M') {
Expand Down Expand Up @@ -1983,7 +1983,7 @@ static int32_t readMessage(const uCellPrivateInstance_t *pInstance,
U_CELL_PRIVATE_FEATURE_MQTT_SARA_R4_OLD_SYNTAX)) {
U_ASSERT(pUrcMessage != NULL);
// For the old-style SARA-R4 interface we need a URC capture
U_ASSERT(U_CELL_PRIVATE_MODULE_IS_SARA_R4(pInstance->pModule->moduleType));
U_ASSERT(U_CELL_PRIVATE_MODULE_IS_R4(pInstance->pModule->moduleType));
pUrcMessage->messageRead = false;
pUrcMessage->pTopicNameStr = pTopicNameStr;
pUrcMessage->topicNameSizeBytes = (int32_t) topicNameSizeBytes;
Expand Down Expand Up @@ -2220,12 +2220,12 @@ int32_t uCellMqttInit(uDeviceHandle_t cellHandle, const char *pBrokerNameStr,
pContext->numTries = U_CELL_MQTT_RETRIES_DEFAULT + 1;
pContext->mqttSn = mqttSn;
pInstance->pMqttContext = pContext;
if (U_CELL_PRIVATE_MODULE_IS_SARA_R4(pInstance->pModule->moduleType)) {
if (U_CELL_PRIVATE_MODULE_IS_R4(pInstance->pModule->moduleType)) {
// SARA-R4 requires a pUrcMessage as well
pContext->pUrcMessage = (uCellMqttUrcMessage_t *) pUPortMalloc(sizeof(*(pContext->pUrcMessage)));
}
if ((pContext->pUrcMessage != NULL) ||
!U_CELL_PRIVATE_MODULE_IS_SARA_R4(pInstance->pModule->moduleType)) {
!U_CELL_PRIVATE_MODULE_IS_R4(pInstance->pModule->moduleType)) {
atHandle = pInstance->atHandle;
// Deal with the broker name string
// Allocate space to fiddle with the
Expand Down Expand Up @@ -2525,7 +2525,7 @@ int32_t uCellMqttGetLocalPort(uDeviceHandle_t cellHandle)
}
}
if ((errorCodeOrPort < 0) &&
U_CELL_PRIVATE_MODULE_IS_SARA_R4(pInstance->pModule->moduleType)) {
U_CELL_PRIVATE_MODULE_IS_R4(pInstance->pModule->moduleType)) {
// SARA-R4 doesn't respond with a port number if the
// port number is just the default one.
errorCodeOrPort = (int32_t) U_ERROR_COMMON_NOT_SUPPORTED;
Expand Down
2 changes: 1 addition & 1 deletion cell/src/u_cell_mux.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1079,7 +1079,7 @@ static uint8_t getChannelGnss(const uCellPrivateInstance_t *pInstance)
{
uint8_t channel = (uint8_t) pInstance->pModule->defaultMuxChannelGnss;

if (U_CELL_PRIVATE_MODULE_IS_SARA_R5(pInstance->pModule->moduleType)) {
if (U_CELL_PRIVATE_MODULE_IS_R5(pInstance->pModule->moduleType)) {
// For the SARA-R5 case the CMUX channel for GNSS is different
// if we are exchanging AT commands on the AUX UART, which is
// USIO variant 2.
Expand Down
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