【大联大世平ON Semiconductor BLE5.0 RSL10开发板试用体验】BLE5.0 RSL10 ADC和USART测试。

马猛

2020-7-25 23:14:45

2120

`BLE5.0 RSL10有双核，其中同一个为ARM® Cortex®-M3 Processor 另一是 LPDSP32 DSP core 。

ADC参数如下：

ADC 通道：An Analog to Digital converter (ADC), accessed by the Arm Cortex-M3 processor. The ADC can read 4 external values (DIO[0]-DIO[3]), AOUT, VDDC, VBAT/2 and the ADC offset value.

板子ADC 有串口发出：开发板符合Arduino所有接口标准定义。

端口示意图，CH340 USB转TTL3.3V

用keil编程，调试。

Jlink独立下载：

结果如下，显示OK

程序如下：

/* ----------------------------------------------------------------------------
* Copyright (c) 2017 Semiconductor Components Industries, LLC (d/b/a
* ON Semiconductor), All Rights Reserved
*
* This code is the property of ON Semiconductor and may not be redistributed
* in any form without prior written permission from ON Semiconductor.
* The terms of use and warranty for this code are covered by contractual
* agreements between ON Semiconductor and the licensee.
*
* This is Reusable Code.
*
* ----------------------------------------------------------------------------
* app.c
* - ADC UART application that measure and monitor VBAT.
* - The value of VBAT is sent by UART to a terminal.
* - If the value of VBAT goes lower than 1.6 V a error message is sent.
* - As battery monitor is only on Channel 6 or 7, the ADC_CHANNEL need to 6 or
* 7.
* ----------------------------------------------------------------------------
* $Revision: 1.23 $
* $Date: 2019/12/03 22:30:29 $
* ------------------------------------------------------------------------- */
#include
#include
#include
/* ----------------------------------------------------------------------------
* Global Variables Declaration
* ------------------------------------------------------------------------- */
volatile uint8_t data_ready_flag;
volatile uint8_t bat_error_flag;
volatile float adc_value;
/* ----------------------------------------------------------------------------
* Function : void ADC_BATMON_IRQHandler(void)
* ----------------------------------------------------------------------------
* Description : Handle ADC and BATMON interrupts. When the interrupt is from
* ADC add the ADC value to the accumulator adc_value and
* increment the counter. When counter reach 100 calculate the
* average and set data_ready.
* When the interrupt is from battery monitor set bat_error.
* Inputs : None
* Outputs : None
* Assumptions : None
* ------------------------------------------------------------------------- */
void ADC_BATMON_IRQHandler(void)
{
static uint32_t adc_samples_count = 0;
static uint32_t adc_filter_sum = 0.0f;
/* Get status of ADC */
uint32_t adc_status = Sys_ADC_Get_BATMONStatus();
if ((adc_status & (1 << ADC_BATMON_STATUS_BATMON_ALARM_STAT_Pos)) ==
BATMON_ALARM_TRUE)
{
/* Battery monitor alarm status is set */
bat_error_flag = 1;
/* Clear the battery monitor status and counter */
Sys_ADC_Clear_BATMONStatus();
uint32_t dummy = ADC->BATMON_COUNT_VAL;
}
else
{
adc_filter_sum = adc_filter_sum + ADC->DATA_TRIM_CH[ADC_CHANNEL];
adc_samples_count++;
if (adc_samples_count == ADC_FILTER_COUNTS)
{
adc_samples_count = 0;
adc_value = (adc_filter_sum + (float)ADC_FILTER_COUNTS / 2.0f) /
(float)ADC_FILTER_COUNTS;
adc_filter_sum = 0;
data_ready_flag = 1;
}
}
}
/* ----------------------------------------------------------------------------
* Function : void Initialize(void)
* ----------------------------------------------------------------------------
* Description : Initialize the system by disabling interrupts, switching to
* the 8 MHz clock (divided from the 48 MHz crystal),
* configuring the DIOs required for the UART interface,
* configuring ADC to measure VBAT/2, enabling battery monitor
* and enabling interrupts.
* Inputs : None
* Outputs : None
* Assumptions : None
* ------------------------------------------------------------------------- */
void Initialize(void)
{
/* Mask all interrupts */
__set_PRIMASK(PRIMASK_DISABLE_INTERRUPTS);
/* Disable all existing interrupts, clearing all pending source */
Sys_NVIC_DisableAllInt();
Sys_NVIC_ClearAllPendingInt();
/* Test DIO12 to pause the program to make it easy to re-flash */
DIO->CFG[RECOVERY_DIO] = DIO_MODE_INPUT | DIO_WEAK_PULL_UP |
DIO_LPF_DISABLE | DIO_6X_DRIVE;
while (DIO_DATA->ALIAS[RECOVERY_DIO] == 0);
/* Prepare the 48 MHz crystal
* Start and configure VDDRF */
ACS_VDDRF_CTRL->ENABLE_ALIAS = VDDRF_ENABLE_BITBAND;
ACS_VDDRF_CTRL->CLAMP_ALIAS = VDDRF_DISABLE_HIZ_BITBAND;
/* Wait until VDDRF supply has powered up */
while (ACS_VDDRF_CTRL->READY_ALIAS != VDDRF_READY_BITBAND);
/* Enable RF power switches */
SYSCTRL_RF_POWER_CFG->RF_POWER_ALIAS = RF_POWER_ENABLE_BITBAND;
/* Remove RF isolation */
SYSCTRL_RF_ACCESS_CFG->RF_ACCESS_ALIAS = RF_ACCESS_ENABLE_BITBAND;
/* Start the 48 MHz oscillator without changing the other register bits */
RF->XTAL_CTRL = ((RF->XTAL_CTRL & ~XTAL_CTRL_DISABLE_OSCILLATOR) |
XTAL_CTRL_REG_VALUE_SEL_INTERNAL);
/* Enable 48 MHz oscillator divider to generate an 8 MHz clock. */
RF_REG2F->CK_DIV_1_6_CK_DIV_1_6_BYTE = CK_DIV_1_6_PRESCALE_6_BYTE;
/* Wait until 48 MHz oscillator is started */
while (RF_REG39->ANALOG_INFO_CLK_DIG_READY_ALIAS !=
ANALOG_INFO_CLK_DIG_READY_BITBAND);
/* Switch to (divided 48 MHz) oscillator clock */
Sys_Clocks_SystemClkConfig(JTCK_PRESCALE_1 |
EXTCLK_PRESCALE_1 |
SYSCLK_CLKSRC_RFCLK);
/* Setup DIO6 as a GPIO output */
Sys_DIO_Config(LED_DIO, DIO_MODE_GPIO_OUT_0);
/* Initialize the UART and associated DMA */
UART_Initialize();
/* Set the ADC configuration */
Sys_ADC_Set_Config(ADC_VBAT_DIV2_NORMAL | ADC_NORMAL | ADC_PRESCALE_1280H);
/* Set the battery monitor interrupt configuration */
Sys_ADC_Set_BATMONIntConfig(INT_EBL_ADC |
ADC_CHANNEL <<
ADC_BATMON_INT_ENABLE_ADC_INT_CH_NUM_Pos |
INT_EBL_BATMON_ALARM);
/* Set the battery monitor configuration, use channel ADC_CHANNEL to battery
* monitoring. */
Sys_ADC_Set_BATMONConfig((100 << ADC_BATMON_CFG_ALARM_COUNT_VALUE_Pos) |
(THRESHOLD_CFG <<
ADC_BATMON_CFG_SUPPLY_THRESHOLD_Pos) |
BATMON_CH(ADC_CHANNEL));
/* Configure ADC_CHANNEL input selection to VBAT/2 */
Sys_ADC_InputSelectConfig(ADC_CHANNEL, ADC_POS_INPUT_VBAT_DIV2 |
ADC_NEG_INPUT_GND);
/* Configure both input selection for an ADC channel to GND so the OFFSET is
* subtracted automatically to result. */
Sys_ADC_InputSelectConfig(ADC_GND_CHANNEL, ADC_POS_INPUT_GND |
ADC_NEG_INPUT_GND);
/* Enable interrupts */
NVIC_EnableIRQ(ADC_BATMON_IRQn);
/* Unmask all interrupts */
__set_PRIMASK(PRIMASK_ENABLE_INTERRUPTS);
}
/* ----------------------------------------------------------------------------
* Function : void Send_ADC_Value (void)
* ----------------------------------------------------------------------------
* Description : Create a buffer with "ADC VALUE = x.xxx V" where x is the
* ADC value read by the ADC and send it to the UART. The number
* of digits of the mantissa is defined by NUM_DIGITS. The value
* add to the buffer is truncated.
* Inputs : None
* Outputs : None
* Assumptions : None
* ------------------------------------------------------------------------- */
void Send_ADC_Value(void)
{
uint8_t size;
float adc_in_volts;
char buffer[32];
/* Multiply by 2 as we measure VBAT/2 and divide by a gain factor to convert
* the value from ADC. */
adc_in_volts = (adc_value * 2.0f) / (float)ADC_GAIN;
sprintf(buffer, "ADC input value = %.3f V
", adc_in_volts);
size = strlen((const char *)buffer);
UART_FillTXBuffer(size, (uint8_t *)buffer);
PRINTF("ADC input value = %d mV
",(int32_t)(adc_in_volts * 1000));
}
/* ----------------------------------------------------------------------------
* Function : void Send_VBAT_Error (void)
* ----------------------------------------------------------------------------
* Description : Create a buffer with "VBAT lower than threshold!!" and send
* it to the UART.
* Inputs : None
* Outputs : None
* Assumptions : None
* ------------------------------------------------------------------------- */
void Send_VBAT_Error(void)
{
uint8_t size;
const char buffer[] = "VBAT voltage lower than threshold!!
";
size = strlen(buffer);
UART_FillTXBuffer(size, (uint8_t *)buffer);
PRINTF("VBAT voltage lower than threshold!!
");
}
/* ----------------------------------------------------------------------------
* Function : int main(void)
* ----------------------------------------------------------------------------
* Description : Initialize the system. The ADC value is read and an average
* of 100 values are made. When the average value is calculated
* it's sent by UART. If a battery monitor interrupt is
* generated an error message is sent by UART.
* Inputs : None
* Outputs : None
* Assumptions : None
* ------------------------------------------------------------------------- */
int main(void)
{
/* Initialize global variables */
data_ready_flag = 0;
bat_error_flag = 0;
adc_value = 0.0f;
/* Initialize the system */
Initialize();
PRINTF("DEVICE INITIALIZED
");
/* Spin loop */
while (1)
{
/* Refresh the watch-dog timer */
Sys_Watchdog_Refresh();
if (data_ready_flag == 1)
{
data_ready_flag = 0;
Send_ADC_Value();
}
if (bat_error_flag == 1)
{
bat_error_flag = 0;
Send_VBAT_Error();
}
}
}

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