Add a complete API for controlling the UART interrupts.
Doxygen documentation with inline code examples is also provided in this patch.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Add basic functionality needed to setup the UART and send/recieve data.
Interrupts, DMA, and more advanced features are not implemented in this patch.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
rcc_set_pll_divisor() would take the number we wanted to divide the 400MHz
clock and put it directly in the RCC2 register. This caused the clock to always
be one speed tier slower than expected. The value of the divisor must be
decremented by 1, so a divisor of 5 will be written as 4 in the RCC2.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
to remove errors, duplications and inconsistencies.
File lib/stm32/f1/pwr.c - all code removed as it duplicates that in common/pwr_common.c
Remaining changes do not affect code. Compiles OK.
TODO efm32 has no code so generates no modules
TODO F2 needs pwr.c
TODO L1 needs dma.h and dma.c
Add an abstraction layer to handle the clock control for the run time clock on
LM4F (RCC). Sleep and deep-sleep clock configuration is not handled.
Complete documentation for the clock control API is included in doxygen-style
comments, and is included in [doc].
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Conflicts:
lib/lm4f/Makefile
The enum definitions are specified in the form
31:5 register offset from SYSCTL_BASE for the clock register
4:0 bit offset for the given peripheral
The names have the form [clock_type]_[periph_type]_[periph_number]
Where clock_type is
RCC for run clock
SCC for sleep clock
DCC for deep-sleep clock
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Specify the -mfloat-abi=hard and -mfpu=fpv4-sp-d16 flags so that FPU
is enabled by default.
While this compiles with FPU support, in order to use the floating point types,
the FPU must be explicitly enabled at runtime.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Create lm4f code infrastructure from the lm3s infrastructure.
As far as the interrupt table is concerned, don't create an irq.yaml. Just
include the LM3S nvic.h. The LM3S vector table seems to be compatible with the
LM4F
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
