Skip to content

STM32 L0 ADC internal channel fix #8103

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Oct 5, 2018
Merged

STM32 L0 ADC internal channel fix #8103

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
5bbe628
STM32L072 : ADC internal channels correction
jeromecoutant Sep 12, 2018
1252221
STM32L0 internal channel ADC_TEMP
jeromecoutant Sep 12, 2018
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 2 additions & 3 deletions .../TARGET_STM/TARGET_STM32L0/TARGET_STM32L072xZ/TARGET_DISCO_L072CZ_LRWAN1/PeripheralPins.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -70,9 +70,8 @@ MBED_WEAK const PinMap PinMap_ADC[] = {
};

MBED_WEAK const PinMap PinMap_ADC_Internal[] = {
{ADC_TEMP, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)},
{ADC_VREF, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)},
{ADC_VBAT, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)},
{ADC_VREF, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)}, // ADC_IN17 // VREFINT
{ADC_TEMP, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)}, // ADC_IN18 // VSENSE
{NC, NC, 0}
};

Expand Down
5 changes: 2 additions & 3 deletions targets/TARGET_STM/TARGET_STM32L0/TARGET_STM32L0x2xZ/TARGET_MTB_MURATA_ABZ/PeripheralPins.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -48,9 +48,8 @@ const PinMap PinMap_ADC[] = {
};

const PinMap PinMap_ADC_Internal[] = {
{ADC_TEMP, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)}, // Internal channel
{ADC_VREF, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // Internal channel
{ADC_VBAT, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)}, // Internal channel
{ADC_VREF, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)}, // ADC_IN17 // VREFINT
{ADC_TEMP, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)}, // ADC_IN18 // VSENSE
{NC, NC, 0}
};

Expand Down
6 changes: 6 additions & 0 deletions targets/TARGET_STM/TARGET_STM32L0/analogin_device.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -172,6 +172,12 @@ uint16_t adc_read(analogin_t *obj)

HAL_ADC_ConfigChannel(&obj->handle, &sConfig);

/* need to wait for some stabilization time after setting the TSEN bit in the ADC_CCR
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

This wait is not needed on other STM32 series ?

register to wake up the temperature sensor from power down mode */
if (sConfig.Channel == ADC_CHANNEL_TEMPSENSOR) {
wait_ms(20);
}

HAL_ADC_Start(&obj->handle); // Start conversion

// Wait end of conversion and get value
Expand Down