Stm32bluepill

Results 2 issues of Stm32bluepill

can i store full Arduino program in SPI flash instead of Stm32 internal Flash storage ? Can external SPI flash chip increase Stm32 program memory ?

Serial output not working on stm32f103c8t6 program compiled and uploaded successfully ok device but doesn't have any output from serial monitor in example ino file of serial_clock_and_Calender file