When two or more analogue inputs are initialized on more than one ADC HW block the initialisation fails with:
Cannot initialize ADC
The reason is the reusage of just one ADC_HandleTypeDef for all initializations (in mbed\targets\hal\TARGET_STM\TARGET_STM32F3\analogin_api.c). After the first (successful) ADC initialisation AdcHandle.State is set to HAL_ADC_STATE_READY).
But for another ADC block initialisation the AdcHandle.State has to be reset so that the HAL initialize it (in mbed\targets\cmsis\TARGET_STM\TARGET_STM32F3\stm32f3xx_hal_adc_ex.c line 424). When this state is not reset the HAL returns with an initialization error. And this error induces the above mbed error message.
The error message can be reproduced just with AnalogIn in1(xx); AnalogIn in2(yy); where xx and yy belongs to two different ADC blocks.
Datasheet (Table 82) says MSEL bits should be 5, and the PSEL bits should
be 1, for the correct FCCO frequency of 288MHz. The current configuration
has FCCO = 144MHz, which is technically out of spec.
Tested on a custom LPC1549 board with crystal oscillator running at 12MHz.
Modified the LPC1549 AnalogIn implementation to use the ADCs in
synchronous mode, which is consistent with the LPC11U68 implementation.
This improves performance, and allows the IRC oscillator to be powered
down if necessary.
Use only the index, not the UARTName any more.
In case of app with 2 serial (using DMA) + 1 serial (stdio), we have found a bug. The dma handler is overwritten by the last initialized serial object.
Therefore read and write functions did not work anymore.
We have reworked this file to save 1 handler per UART IP, and align it with MBED OS file.
Tests have been passed. Same status as before (OK except MBED_37, manual test for SERIAL_ASYNC also OK).
We modified the following to support the export function to the IAR.
- In tools files, add RZ_A1H to the target of IAR.
- In tools files, add the tmpl files.