My tests with the RTOS are stable.īugfix : the bmp from filesystem is working again The automatic spi cs could make problems when interrupted by interrupts or RTOS. The lib use a io pin to generate the cs signal again. At the moment it is working at 10MHz SPI clock. The lib supports also the new Freescale KL25Z board. Will it be to slow ? No ! We can drive the SPI to display with 48Mhz clock speed !ĥ0Mhz is the limit, but the mbed is running at 96Mhz and we can divide this clock by two. SPI is serial and we have to transfer 320 * 240 * 16 = 1228800 bits to the display to fill it up. The RST pin is connected to reset, RS and FMARK are not used.įor SPI mode we need only the tree SPI signals, a cs and a reset signal. The IMx-pins have to set to IM0,IM1,IM3 : GND, IM2 : 3.3V. Because I don't want to spend all mbed IOs to the display I use the SPI mode. The interface can be driven in 16 bit,8 bit, 18 bit, 9 bit or SPI mode. I use two 10R resistors parallel to get 5R driven by 3.3V. The backlite LED need a resistor to limit the current. The board use 3.3V so we can attach it direct to the mbed. The new display has a different controller and the lib has be changed to support this. MicroElektronika has changed the type of display used in her product. MikroElektronika has changed the Display !!
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