fly316/PX4-Autopilot
7
0
Fork 0
mirror of https://gitee.com/mirrors_PX4/PX4-Autopilot.git synced 2026-11-01 20:41:36 +08:00
Code Issues Packages Projects Releases Wiki Activity

nxphlite-v3:V3.5 HW changes

Browse Source
This commit is contained in:
David Sidrane
2017-10-04 04:49:35 -10:00
parent 9ce3fc6700
commit 812128d565
7 changed files with 300 additions and 328 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/drivers/kinetis/drv_io_timer.c
+7 -9
View File
@@ -62,24 +62,22 @@
#include "chip/kinetis_sim.h"
#include "chip/kinetis_ftm.h"
/* The FTM prescalers are limited to Divide by 2^n where n={1-7}
* Therefore we use the FTM2 CH0 on PTA10 drive FTM_CLKIN0 (PCT12)
* and use this at a 4Mhz clock for FTM0 and FTM3.
/* The FTM pre-scalers are limited to Divide by 2^n where n={1-7}
* Therefore we use Y1 at 16 Mhz to drive FTM_CLKIN0 (PCT12)
* and use this at a 16Mhz clock for FTM0, FTM2 and FTM3.
*
* The input frequencies avaialble from FTM2 are 56,28,14,7,3.5
* So a onshot mode at 8Mhz is not possible. We will use 4Mhz
*
* FTM0 will drive FMU_CH1-6, FTM3 will drive IO_CH1-8
* FTM0 will drive FMU_CH1-4, FTM3 will drive FMU_CH5,6, and
* U_TRI. FTM2 will be used as input capture on U_ECH
*/
#if !defined(BOARD_PWM_FREQ)
#define BOARD_PWM_FREQ 1000000
#endif
#if !defined(BOARD_ONESHOT_FREQ)
#define BOARD_ONESHOT_FREQ 4000000
#define BOARD_ONESHOT_FREQ 8000000
#endif
#define FTM_SRC_CLOCK_FREQ 4000000
#define FTM_SRC_CLOCK_FREQ 16000000
#define MAX_CHANNELS_PER_TIMER 8