Difference between revisions of "IoTGateway/BSP/Android/Gettingstarted/How to use CAN Bus"
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| (8 intermediate revisions by the same user not shown) | |||
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| + | i.MX6 uses the internal FlexCAN(Flexible Controller Area Network) module implementing the CAN protocol according to the CAN 2.0B. | ||
| + | |||
=== Pin Define === | === Pin Define === | ||
| Line 4: | Line 6: | ||
{| border="1" cellspacing="1" cellpadding="1" style="width:500px;" | {| border="1" cellspacing="1" cellpadding="1" style="width:500px;" | ||
| − | |+ | + | |+ CAN0(CAN bus 0) CAN1(CAN bus 1) |
| − | CAN0(CAN bus 0) CAN1(CAN bus 1) | ||
| − | |||
|- | |- | ||
| Pin | | Pin | ||
| Line 13: | Line 13: | ||
| Signal | | Signal | ||
|- | |- | ||
| − | | 1 | + | | 1 |
| - | | - | ||
| − | | 2 | + | | 2 |
| - | | - | ||
|- | |- | ||
| − | | 3 | + | | 3 |
| − | | CAN0_D- | + | | CAN0_D- |
| − | | 4 | + | | 4 |
| - | | - | ||
|- | |- | ||
| − | | 5 | + | | 5 |
| − | | CAN0_D+ | + | | CAN0_D+ |
| − | | 6 | + | | 6 |
| - | | - | ||
|- | |- | ||
| − | | 7 | + | | 7 |
| - | | - | ||
| − | | 8 | + | | 8 |
| - | | - | ||
|- | |- | ||
| − | | 9 | + | | 9 |
| GND | | GND | ||
| − | | 10 | + | | 10 |
| - | | - | ||
|} | |} | ||
| Line 77: | Line 77: | ||
| − | === | + | === Configuration/Test === |
| + | |||
| + | ==== Configuration ==== | ||
| + | |||
| + | Connect CAN0 to CAN1 | ||
<tt>CAN0_D+ </tt>connect to <tt>CAN1_D+</tt> | <tt>CAN0_D+ </tt>connect to <tt>CAN1_D+</tt> | ||
<tt>CAN0_D- </tt>connect to <tt>CAN1_D-</tt> | <tt>CAN0_D- </tt>connect to <tt>CAN1_D-</tt> | ||
| + | <pre># ip link set can0 up type can bitrate 125000 | ||
| + | # ip link set can1 up type can bitrate 125000</pre> | ||
| + | |||
| − | |||
| − | |||
| − | + | ==== Test ==== | |
| − | + | ||
| + | *Test 1 | ||
| + | <pre># candump can1 & | ||
| + | # cansend can0 12345678#123412341234 | ||
</pre> | </pre> | ||
| − | + | The following shows the result | |
| + | <pre>can1 12345678 [6] 12 34 12 34 12 34 | ||
| + | </pre> | ||
| − | *Test | + | *Test 2 |
| + | <pre># cansend can0 133#ababdede | ||
| + | </pre> | ||
| + | |||
| + | The following shows the result | ||
| + | <pre>can1 133 [4] AB AB DE DE | ||
| + | </pre> | ||
Latest revision as of 08:18, 3 February 2017
i.MX6 uses the internal FlexCAN(Flexible Controller Area Network) module implementing the CAN protocol according to the CAN 2.0B.
Pin Define
ROM-3420
| Pin | Signal | Pin | Signal |
| 1 | - | 2 | - |
| 3 | CAN0_D- | 4 | - |
| 5 | CAN0_D+ | 6 | - |
| 7 | - | 8 | - |
| 9 | GND | 10 | - |
ROM-7421
| Pin | Signal | Pin | Signal |
| 1 | - | 2 | CAN0_D- |
| 3 | |
4 | - |
| 5 | GND |
6 | GND |
| 7 | CAN0_D+ | 8 | - |
| 9 | 10 | - |
Configuration/Test
Configuration
Connect CAN0 to CAN1
CAN0_D+ connect to CAN1_D+
CAN0_D- connect to CAN1_D-
# ip link set can0 up type can bitrate 125000 # ip link set can1 up type can bitrate 125000
Test
- Test 1
# candump can1 & # cansend can0 12345678#123412341234
The following shows the result
can1 12345678 [6] 12 34 12 34 12 34
- Test 2
# cansend can0 133#ababdede
The following shows the result
can1 133 [4] AB AB DE DE