Other Parts Discussed in Thread: SYSCONFIG
器件型号： MSPM0G3519-Q1
主题： SysConfig 中讨论的其他器件
当同时在两个 ADC 上启用硬件均值计算时、如果 ADC0 的硬件均值计算关闭的代码中唯一的差异、则输出似乎仅在 ADC0 上进行均值计算、而在 ADC1 上不进行均值计算、但 ADC1 的设置保持不变 — ADC1 上似乎会出现硬件均值计算。 无法找到有关此类问题的任何信息。 请提供建议。
此 pic 展示了启用硬件均值计算功能的两个 ADC
下面显示了禁用硬件均值计算的紫色通道、而绿色通道具有零个改变：
您好、
我已经测试了函数、没有发现明显的故障。 硬件平均值功能适用于 ADC0 和 ADC1。
测试结果如下：
测试代码如下：
#include "ti_msp_dl_config.h"
volatile bool gCheckADC;
volatile uint16_t gAdcResult0[200]={0};
volatile uint16_t gAdcResult1[200]={0};
volatile uint16_t cnt;
int main(void)
{
SYSCFG_DL_init();
cnt = 0;
while (1) {
DL_GPIO_clearPins(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_0_PIN);
DL_ADC12_startConversion(ADC12_0_INST);
while(DL_ADC12_getRawInterruptStatus(ADC12_0_INST, DL_ADC12_INTERRUPT_MEM0_RESULT_LOADED) != DL_ADC12_INTERRUPT_MEM0_RESULT_LOADED)
;
gAdcResult0[cnt] = DL_ADC12_getMemResult(ADC12_0_INST, DL_ADC12_MEM_IDX_0);
DL_GPIO_setPins(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_0_PIN);
DL_ADC12_clearInterruptStatus(ADC12_0_INST, DL_ADC12_INTERRUPT_MEM0_RESULT_LOADED);
delay_cycles(32);
DL_GPIO_clearPins(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_1_PIN);
DL_ADC12_startConversion(ADC12_1_INST);
while(DL_ADC12_getRawInterruptStatus(ADC12_1_INST, DL_ADC12_INTERRUPT_MEM0_RESULT_LOADED) != DL_ADC12_INTERRUPT_MEM0_RESULT_LOADED)
;
gAdcResult1[cnt] = DL_ADC12_getMemResult(ADC12_1_INST, DL_ADC12_MEM_IDX_0);
DL_GPIO_setPins(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_1_PIN);
DL_ADC12_clearInterruptStatus(ADC12_1_INST, DL_ADC12_INTERRUPT_MEM0_RESULT_LOADED);
delay_cycles(32);
cnt++;
if(cnt==200)cnt=0;
DL_ADC12_enableConversions(ADC12_0_INST);
DL_ADC12_enableConversions(ADC12_1_INST);
}
}
#include "ti_msp_dl_config.h"
/*
* ======== SYSCFG_DL_init ========
* Perform any initialization needed before using any board APIs
*/
SYSCONFIG_WEAK void SYSCFG_DL_init(void)
{
SYSCFG_DL_initPower();
SYSCFG_DL_GPIO_init();
/* Module-Specific Initializations*/
SYSCFG_DL_SYSCTL_init();
SYSCFG_DL_ADC12_0_init();
SYSCFG_DL_ADC12_1_init();
}
SYSCONFIG_WEAK void SYSCFG_DL_initPower(void)
{
DL_GPIO_reset(GPIOA);
DL_GPIO_reset(GPIOB);
DL_GPIO_reset(GPIOC);
DL_ADC12_reset(ADC12_0_INST);
DL_ADC12_reset(ADC12_1_INST);
DL_GPIO_enablePower(GPIOA);
DL_GPIO_enablePower(GPIOB);
DL_GPIO_enablePower(GPIOC);
DL_ADC12_enablePower(ADC12_0_INST);
DL_ADC12_enablePower(ADC12_1_INST);
delay_cycles(POWER_STARTUP_DELAY);
}
SYSCONFIG_WEAK void SYSCFG_DL_GPIO_init(void)
{
DL_GPIO_initDigitalOutput(GPIO_LEDS_USER_LED_0_IOMUX);
DL_GPIO_initDigitalOutput(GPIO_LEDS_USER_LED_1_IOMUX);
DL_GPIO_clearPins(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_1_PIN);
DL_GPIO_setPins(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_0_PIN);
DL_GPIO_enableOutput(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_0_PIN |
GPIO_LEDS_USER_LED_1_PIN);
}
SYSCONFIG_WEAK void SYSCFG_DL_SYSCTL_init(void)
{
//Low Power Mode is configured to be SLEEP0
DL_SYSCTL_setBORThreshold(DL_SYSCTL_BOR_THRESHOLD_LEVEL_0);
DL_SYSCTL_setSYSOSCFreq(DL_SYSCTL_SYSOSC_FREQ_BASE);
/* Set default configuration */
DL_SYSCTL_disableHFXT();
DL_SYSCTL_disableSYSPLL();
}
/* ADC12_0 Initialization */
static const DL_ADC12_ClockConfig gADC12_0ClockConfig = {
.clockSel = DL_ADC12_CLOCK_ULPCLK,
.divideRatio = DL_ADC12_CLOCK_DIVIDE_1,
.freqRange = DL_ADC12_CLOCK_FREQ_RANGE_24_TO_32,
};
SYSCONFIG_WEAK void SYSCFG_DL_ADC12_0_init(void)
{
DL_ADC12_setClockConfig(ADC12_0_INST, (DL_ADC12_ClockConfig *) &gADC12_0ClockConfig);
DL_ADC12_configConversionMem(ADC12_0_INST, ADC12_0_ADCMEM_0,
DL_ADC12_INPUT_CHAN_0, DL_ADC12_REFERENCE_VOLTAGE_VDDA_VSSA, DL_ADC12_SAMPLE_TIMER_SOURCE_SCOMP0, DL_ADC12_AVERAGING_MODE_ENABLED,
DL_ADC12_BURN_OUT_SOURCE_DISABLED, DL_ADC12_TRIGGER_MODE_AUTO_NEXT, DL_ADC12_WINDOWS_COMP_MODE_DISABLED);
DL_ADC12_setPowerDownMode(ADC12_0_INST,DL_ADC12_POWER_DOWN_MODE_MANUAL);
DL_ADC12_configHwAverage(ADC12_0_INST,DL_ADC12_HW_AVG_NUM_ACC_32,DL_ADC12_HW_AVG_DEN_DIV_BY_32);
DL_ADC12_setSampleTime0(ADC12_0_INST,16);
DL_ADC12_enableConversions(ADC12_0_INST);
}
/* ADC12_1 Initialization */
static const DL_ADC12_ClockConfig gADC12_1ClockConfig = {
.clockSel = DL_ADC12_CLOCK_ULPCLK,
.divideRatio = DL_ADC12_CLOCK_DIVIDE_1,
.freqRange = DL_ADC12_CLOCK_FREQ_RANGE_24_TO_32,
};
SYSCONFIG_WEAK void SYSCFG_DL_ADC12_1_init(void)
{
DL_ADC12_setClockConfig(ADC12_1_INST, (DL_ADC12_ClockConfig *) &gADC12_1ClockConfig);
DL_ADC12_configConversionMem(ADC12_1_INST, ADC12_1_ADCMEM_0,
DL_ADC12_INPUT_CHAN_0, DL_ADC12_REFERENCE_VOLTAGE_VDDA_VSSA, DL_ADC12_SAMPLE_TIMER_SOURCE_SCOMP0, DL_ADC12_AVERAGING_MODE_ENABLED,
DL_ADC12_BURN_OUT_SOURCE_DISABLED, DL_ADC12_TRIGGER_MODE_AUTO_NEXT, DL_ADC12_WINDOWS_COMP_MODE_DISABLED);
DL_ADC12_setPowerDownMode(ADC12_1_INST,DL_ADC12_POWER_DOWN_MODE_MANUAL);
DL_ADC12_configHwAverage(ADC12_1_INST,DL_ADC12_HW_AVG_NUM_ACC_32,DL_ADC12_HW_AVG_DEN_DIV_BY_32);
DL_ADC12_setSampleTime0(ADC12_1_INST,16);
DL_ADC12_enableConversions(ADC12_1_INST);
}
/*
* ============ ti_msp_dl_config.h =============
* Configured MSPM0 DriverLib module declarations
*
* DO NOT EDIT - This file is generated for the MSPM0G351X
* by the SysConfig tool.
*/
#ifndef ti_msp_dl_config_h
#define ti_msp_dl_config_h
#define CONFIG_MSPM0G351X
#define CONFIG_MSPM0G3519
#if defined(__ti_version__) || defined(__TI_COMPILER_VERSION__)
#define SYSCONFIG_WEAK __attribute__((weak))
#elif defined(__IAR_SYSTEMS_ICC__)
#define SYSCONFIG_WEAK __weak
#elif defined(__GNUC__)
#define SYSCONFIG_WEAK __attribute__((weak))
#endif
#include <ti/devices/msp/msp.h>
#include <ti/driverlib/driverlib.h>
#include <ti/driverlib/m0p/dl_core.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* ======== SYSCFG_DL_init ========
* Perform all required MSP DL initialization
*
* This function should be called once at a point before any use of
* MSP DL.
*/
/* clang-format off */
#define POWER_STARTUP_DELAY (16)
#define CPUCLK_FREQ 32000000
/* Defines for ADC12_0 */
#define ADC12_0_INST ADC0
#define ADC12_0_INST_IRQHandler ADC0_IRQHandler
#define ADC12_0_INST_INT_IRQN (ADC0_INT_IRQn)
#define ADC12_0_ADCMEM_0 DL_ADC12_MEM_IDX_0
#define ADC12_0_ADCMEM_0_REF DL_ADC12_REFERENCE_VOLTAGE_VDDA_VSSA
#define GPIO_ADC12_0_C0_PORT GPIOA
#define GPIO_ADC12_0_C0_PIN DL_GPIO_PIN_27
#define GPIO_ADC12_0_IOMUX_C0 (IOMUX_PINCM60)
#define GPIO_ADC12_0_IOMUX_C0_FUNC (IOMUX_PINCM60_PF_UNCONNECTED)
/* Defines for ADC12_1 */
#define ADC12_1_INST ADC1
#define ADC12_1_INST_IRQHandler ADC1_IRQHandler
#define ADC12_1_INST_INT_IRQN (ADC1_INT_IRQn)
#define ADC12_1_ADCMEM_0 DL_ADC12_MEM_IDX_0
#define ADC12_1_ADCMEM_0_REF DL_ADC12_REFERENCE_VOLTAGE_VDDA_VSSA
#define GPIO_ADC12_1_C0_PORT GPIOA
#define GPIO_ADC12_1_C0_PIN DL_GPIO_PIN_15
#define GPIO_ADC12_1_IOMUX_C0 (IOMUX_PINCM37)
#define GPIO_ADC12_1_IOMUX_C0_FUNC (IOMUX_PINCM37_PF_UNCONNECTED)
/* Port definition for Pin Group GPIO_LEDS */
#define GPIO_LEDS_PORT (GPIOA)
/* Defines for USER_LED_0: GPIOA.0 with pinCMx 1 on package pin 1 */
#define GPIO_LEDS_USER_LED_0_PIN (DL_GPIO_PIN_0)
#define GPIO_LEDS_USER_LED_0_IOMUX (IOMUX_PINCM1)
/* Defines for USER_LED_1: GPIOA.1 with pinCMx 2 on package pin 2 */
#define GPIO_LEDS_USER_LED_1_PIN (DL_GPIO_PIN_1)
#define GPIO_LEDS_USER_LED_1_IOMUX (IOMUX_PINCM2)
/* clang-format on */
void SYSCFG_DL_init(void);
void SYSCFG_DL_initPower(void);
void SYSCFG_DL_GPIO_init(void);
void SYSCFG_DL_SYSCTL_init(void);
void SYSCFG_DL_ADC12_0_init(void);
void SYSCFG_DL_ADC12_1_init(void);
#ifdef __cplusplus
}
#endif
#endif /* ti_msp_dl_config_h */
B.R.
Sal
尊敬的 Mykhaylo：
是、这在“TRM ADC“一章中有提到：
如果没有极端的功耗要求、我们建议使用手动断电模式。
否则、我们需要设置更大的采样时间来覆盖 ADC 唤醒和启用时间。
B.R.
Sal
尊敬的 Mykhaylo：
正如我提到的、这是因为在自动模式下工作时 ADC 不能稳定来启动 ADC 转换。 我们没有分析其影响的关系。
虽然我认为如果您设置的采样时间更长（涵盖 ADC 唤醒、使能和原始 ADC 通道采样时间）、那么您可以获得相同的稳定 ADC 转换结果。
唤醒时间最多需要 5 μ s：
启用时间通常需要几个 ULPCLK 周期：
例如、如果您将原始采样时间设置为 1us、则应将其设置为 1+5+0.1=6.1us 以满足所需的时序要求。
在硬件平均模式下工作时、这种方法不够充分、因为只有第一次转换需要更大的采样时间来等待 ADC 唤醒、而以下重复转换（对于硬件平均值）仅寻求较小的采样时间。
B.R.
Sal