added all examples to platformio

to keep platformio projects in sync with the examples folders, I added missing ones in alphabetical order.

platformio.ini

@@ -26,32 +26,125 @@ extra_libs_srcs = +<extralibs>
 ; 2. Add build_src_filter with fun base files + example folder (+ extra libraries if used) for source files
 ; 3. Add additional build flags as needed (see uartdemo)
 ; 4. Switch to new environment in VSCode bottom taskbar (https://docs.platformio.org/en/latest/integration/ide/vscode.html#project-tasks)
+[env:adc_dma_opamp]
+build_src_filter = ${fun_base.build_src_filter} +<examples/adc_dma_opamp>
+
+[env:adc_fixed_fs]
+build_src_filter = ${fun_base.build_src_filter} +<examples/adc_fixed_fs>
+
+[env:adc_polled]
+build_src_filter = ${fun_base.build_src_filter} +<examples/adc_polled>
+
 [env:blink]
 build_src_filter = ${fun_base.build_src_filter} +<examples/blink>
 
 [env:bootload]
 build_src_filter = ${fun_base.build_src_filter} +<examples/bootload>
 
+[env:cap_touch_adc]
+build_src_filter = ${fun_base.build_src_filter} +<examples/cap_touch_adc>
+
+[env:cap_touch_exti]
+build_src_filter = ${fun_base.build_src_filter} +<examples/cap_touch_exti>
+
+[env:cpp_virtual_methods]
+build_src_filter = ${fun_base.build_src_filter} +<examples/cpp_virtual_methods>
+
 [env:debugprintfdemo]
 build_src_filter = ${fun_base.build_src_filter} +<examples/debugprintfdemo>
 
+[env:direct_gpio]
+build_src_filter = ${fun_base.build_src_filter} +<examples/direct_gpio>
+
+[env:dma_gpio]
+build_src_filter = ${fun_base.build_src_filter} +<examples/dma_gpio>
+
 [env:external_crystal]
 build_src_filter = ${fun_base.build_src_filter} +<examples/external_crystal>
 
+[env:exti_pin_change_isr]
+build_src_filter = ${fun_base.build_src_filter} +<examples/exti_pin_change_isr>
+
+[env:flashtest]
+build_src_filter = ${fun_base.build_src_filter} +<examples/flashtest>
+
 [env:GPIO]
 build_src_filter = ${fun_base.build_src_filter} ${fun_base.extra_libs_srcs} +<examples/GPIO>
 
+[env:i2c_oled]
+build_src_filter = ${fun_base.build_src_filter}  +<examples/i2c_oled>
+
+[env:i2c_slave]
+build_src_filter = ${fun_base.build_src_filter}  +<examples/i2c_slave>
+
+[env:input_capture]
+build_src_filter = ${fun_base.build_src_filter}  +<examples/input_capture>
+
+[env:iwdg]
+build_src_filter = ${fun_base.build_src_filter} +<examples/iwdg>
+
+[env:hsitrim]
+build_src_filter = ${fun_base.build_src_filter}  +<examples/hsitrim>
+
+[env:MCOtest]
+build_src_filter = ${fun_base.build_src_filter}  +<examples/MCOtest>
+
 [env:optionbytes]
 build_src_filter = ${fun_base.build_src_filter} +<examples/optionbytes>
 
+[env:optiondata]
+build_src_filter = ${fun_base.build_src_filter} +<examples/optiondata>
+
 [env:run_from_ram]
 build_src_filter = ${fun_base.build_src_filter} +<examples/run_from_ram>
 
+[env:self_modify_code]
+build_src_filter = ${fun_base.build_src_filter} +<examples/self_modify_code>
+
+[env:spi_24L01_rx]
+build_src_filter = ${fun_base.build_src_filter} +<examples/spi_24L01_rx>
+
+[env:spi_24L01_tx]
+build_src_filter = ${fun_base.build_src_filter} +<examples/spi_24L01_tx>
+
+[env:spi_dac]
+build_src_filter = ${fun_base.build_src_filter} +<examples/spi_dac>
+
+[env:spi_oled]
+build_src_filter = ${fun_base.build_src_filter} +<examples/spi_oled>
+
+[env:standby_autowake]
+build_src_filter = ${fun_base.build_src_filter} +<examples/standby_autowake>
+
+[env:standby_btn]
+build_src_filter = ${fun_base.build_src_filter} +<examples/standby_btn>
+
+[env:struct_direct_gpio]
+build_src_filter = ${fun_base.build_src_filter} +<examples/struct_direct_gpio>
+
+[env:struct_gpio]
+build_src_filter = ${fun_base.build_src_filter} +<examples/struct_gpio>
+
+[env:sysclk_config]
+build_src_filter = ${fun_base.build_src_filter} +<examples/sysclk_config>
+
+[env:systick_irq]
+build_src_filter = ${fun_base.build_src_filter} +<examples/systick_irq>
+
 [env:template]
 build_src_filter = ${fun_base.build_src_filter} +<examples/template>
 
-[env:self_modify_code]
-build_src_filter = ${fun_base.build_src_filter} +<examples/self_modify_code>
+[env:tim1_pwm]
+build_src_filter = ${fun_base.build_src_filter} +<examples/tim1_pwm>
+
+[env:tim2_encoder]
+build_src_filter = ${fun_base.build_src_filter} +<examples/tim2_encoder>
+
+[env:tim2_pwm]
+build_src_filter = ${fun_base.build_src_filter} +<examples/tim2_pwm>
+
+[env:tim2_pwm_remap]
+build_src_filter = ${fun_base.build_src_filter} +<examples/tim2_pwm_remap>
 
 [env:uartdemo]
 build_flags = ${fun_base.build_flags} -DSTDOUT_UART