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comparison packages/devs/can/arm/lpc2xxx/current/include/can_lpc2xxx_baudrates.h @ 3268:b06697684f0a

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* src/can_accfilt_lpc2xxx.c, src/can_lpc2xxx.c: Fix a compile issue of the lpc2xxx driver that only occurs if support for extended 29-bit CAN identifiers is enabled and support for message filtering is disabled. [ Bugzilla 1001901 ] * includes/can_lpc2xxx_baudrates.h: Added baudrate table for CAN clock of 14.745600 MHz. [ Bugzilla 1001900 ]
author sergeig
date Wed, 11 Sep 2013 21:00:16 +0000
parents 74dbf4c3f2e1
children
comparison
equal deleted inserted replaced
3267:1053b0d2490c 3268:b06697684f0a
183 CAN_BR_TBL_ENTRY( 0, 0, 0, 0, 0), // Autobaud - not supported 183 CAN_BR_TBL_ENTRY( 0, 0, 0, 0, 0), // Autobaud - not supported
184 }; 184 };
185 #define HAL_LPC2XXX_BAUD_TBL_DEFINED 1 185 #define HAL_LPC2XXX_BAUD_TBL_DEFINED 1
186 #endif // CYGNUM_HAL_ARM_LPC2XXX_CAN_CLK == 12000000 186 #endif // CYGNUM_HAL_ARM_LPC2XXX_CAN_CLK == 12000000
187 187
188 #if CYGNUM_HAL_ARM_LPC2XXX_CAN_CLK == 14745600
189 #warning "You can't get exactly the desired CAN bus speeds with the specified CAN clock of 14.7456 MHz"
190 //
191 // Table with register values for baudrates at peripheral clock of 14.7456 MHz
192 // The clock of 14.7456 MHz is not suited for a good CAN bitrate timing because
193 // you can't get exactly the desired CAN bus speed with the specified CAN
194 // clock frequency. Be sure to check the error values behind the table entries.
195 // Settings leading to speed deviations of more than 1.5% should be discarded.
196 //
197 static const cyg_uint32 lpc2xxx_br_tbl[] =
198 {
199 //----------brp tseg1 tseg2 sjw sam ------------
200 CAN_BR_TBL_ENTRY(58, 20, 2, 0, 1), // 10 kbaud - Timing Error 0.030%
201 CAN_BR_TBL_ENTRY(66, 8, 0, 0, 1), // 20 kbaud - Timing Error -0.038%
202 CAN_BR_TBL_ENTRY(13, 17, 1, 0, 1), // 50 kbaud - Timing Error -0.310%
203 CAN_BR_TBL_ENTRY( 6, 17, 1, 0, 1), // 100 kbaud - Timing Error -0.310%
204 CAN_BR_TBL_ENTRY(12, 6, 0, 0, 1), // 125 kbaud - Timing Error -0.825%
205 CAN_BR_TBL_ENTRY( 5, 7, 0, 0, 1), // 250 kbaud - Timing Error 1.696%
206 CAN_BR_TBL_ENTRY( 2, 7, 0, 0, 0), // 500 kbaud - Timing Error 1.696%
207 CAN_BR_TBL_ENTRY( 1, 6, 0, 0, 0), // 800 kbaud - Timing Error -2.4%
208 CAN_BR_TBL_ENTRY( 0, 11, 1, 0, 0), // 1000 kbaud - Timing Error 1.696%
209 CAN_BR_TBL_ENTRY( 0, 0, 0, 0, 0), // Autobaud - not supported
210 };
211 #define HAL_LPC2XXX_BAUD_TBL_DEFINED 1
212 #endif // CYGNUM_HAL_ARM_LPC2XXX_CAN_CLK == 14745600
213
188 214
189 //========================================================================== 215 //==========================================================================
190 // BIT TIMING MACRO 216 // BIT TIMING MACRO
191 //========================================================================== 217 //==========================================================================
192 // 218 //