interfacing problem

i need to get a c code for interfacing the microcontroller to a GSM Modem only to send sms, i have read all the AT COMMANDS of the sms and the data sheet shows me how to use the modem through the hyper...
interfacing problem

i need to get a c code for interfacing the microcontroller to a GSM Modem only to send sms, i have read all the AT COMMANDS of the sms and the data sheet shows me how to use the modem through the hyper...
upsd33XX spi interface problem,how to connect more than one spi device to SPI interface?

Hi,All There is a host spi controller in upsd33xx series,but only one spi slave chip select signal is provided, how can I connect another spi device? I can use cd4051 cmos swicth to do this, but I...
upsd33XX spi interface problem,how to connect more than one spi device to SPI interface?

Hi,All There is a host spi controller in upsd33xx series,but only one spi slave chip select signal is provided, how can I connect another spi device? I can use cd4051 cmos swicth to do this, but I...
LCD Interfacing problem

I want to interface LCD in 8 bit mode but it can not initializes. bellow is my initialization function please help me to solve this problem. void Lcd_Init() { Lcd_command (0x30); MSdelay(50); Lcd_command...