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arch/arm/src/samv7/sam_pwm.c: option to enable only the L PWM outputs

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PWMx_CHy_LONLY options have been added to Kconfig, too.
If LONLY is selected, it's not possible to use complementary outputs.
If LONLY is not selected, it's possible to use H or complementary
output. If configured correctly with cpol and dcpol attributes,
a H-like behaviour can be achieved. May be useful when you run out
of free MCU pins.

Signed-off-by: Stepan Pressl <pressste@fel.cvut.cz>
This commit is contained in:
Pressl, Štěpán 2024-04-22 23:13:10 +02:00 committed by Xiang Xiao
parent 2c0dac8691
commit 88fa598ea2
2 changed files with 80 additions and 0 deletions
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40
arch/arm/src/samv7/Kconfig
View file

@ -671,8 +671,13 @@ config SAMV7_PWM0_CH0
if SAMV7_PWM0_CH0
config SAMV7_PWM0_CH0_LONLY
bool "Use only L output"
default n
config SAMV7_PWM0_CH0_COMP
bool "Use complementary output"
depends on !SAMV7_PWM0_CH0_LONLY
default n
endif
@ -683,8 +688,13 @@ config SAMV7_PWM0_CH1
if SAMV7_PWM0_CH1
config SAMV7_PWM0_CH1_LONLY
bool "Use only L output"
default n
config SAMV7_PWM0_CH1_COMP
bool "Use complementary output"
depends on !SAMV7_PWM0_CH1_LONLY
default n
endif
@ -695,8 +705,13 @@ config SAMV7_PWM0_CH2
if SAMV7_PWM0_CH2
config SAMV7_PWM0_CH2_LONLY
bool "Use only L output"
default n
config SAMV7_PWM0_CH2_COMP
bool "Use complementary output"
depends on !SAMV7_PWM0_CH2_LONLY
default n
endif
@ -707,8 +722,13 @@ config SAMV7_PWM0_CH3
if SAMV7_PWM0_CH3
config SAMV7_PWM0_CH3_LONLY
bool "Use only L output"
default n
config SAMV7_PWM0_CH3_COMP
bool "Use complementary output"
depends on !SAMV7_PWM0_CH3_LONLY
default n
endif
@ -887,8 +907,13 @@ config SAMV7_PWM1_CH0
if SAMV7_PWM1_CH0
config SAMV7_PWM1_CH0_LONLY
bool "Use only L output"
default n
config SAMV7_PWM1_CH0_COMP
bool "Use complementary output"
depends on !SAMV7_PWM1_CH0_LONLY
default n
endif
@ -899,8 +924,13 @@ config SAMV7_PWM1_CH1
if SAMV7_PWM1_CH1
config SAMV7_PWM1_CH1_LONLY
bool "Use only L output"
default n
config SAMV7_PWM1_CH1_COMP
bool "Use complementary output"
depends on !SAMV7_PWM1_CH1_LONLY
default n
endif
@ -911,8 +941,13 @@ config SAMV7_PWM1_CH2
if SAMV7_PWM1_CH2
config SAMV7_PWM1_CH2_LONLY
bool "Use only L output"
default n
config SAMV7_PWM1_CH2_COMP
bool "Use complementary output"
depends on !SAMV7_PWM1_CH2_LONLY
default n
endif
@ -923,8 +958,13 @@ config SAMV7_PWM1_CH3
if SAMV7_PWM1_CH3
config SAMV7_PWM1_CH3_LONLY
bool "Use only L output"
default n
config SAMV7_PWM1_CH3_COMP
bool "Use complementary output"
depends on !SAMV7_PWM1_CH3_LONLY
default n
endif

40
arch/arm/src/samv7/sam_pwm.c
View file

@ -136,44 +136,64 @@ static struct sam_pwm_channel_s g_pwm0_channels[] =
#ifdef CONFIG_SAMV7_PWM0_CH0
{
.channel = 0,
#ifdef CONFIG_SAMV7_PWM0_CH0_LONLY
.pin_h = 0,
.pin_l = GPIO_PWMC0_L0,
#else
.pin_h = GPIO_PWMC0_H0,
#ifdef CONFIG_SAMV7_PWM0_CH0_COMP
.pin_l = GPIO_PWMC0_L0,
#else
.pin_l = 0,
#endif
#endif
},
#endif
#ifdef CONFIG_SAMV7_PWM0_CH1
{
.channel = 1,
#ifdef CONFIG_SAMV7_PWM0_CH1_LONLY
.pin_h = 0,
.pin_l = GPIO_PWMC0_L1,
#else
.pin_h = GPIO_PWMC0_H1,
#ifdef CONFIG_SAMV7_PWM0_CH1_COMP
.pin_l = GPIO_PWMC0_L1,
#else
.pin_l = 0,
#endif
#endif
},
#endif
#ifdef CONFIG_SAMV7_PWM0_CH2
{
.channel = 2,
#ifdef CONFIG_SAMV7_PWM0_CH2_LONLY
.pin_h = 0,
.pin_l = GPIO_PWMC0_L2,
#else
.pin_h = GPIO_PWMC0_H2,
#ifdef CONFIG_SAMV7_PWM0_CH2_COMP
.pin_l = GPIO_PWMC0_L2,
#else
.pin_l = 0,
#endif
#endif
},
#endif
#ifdef CONFIG_SAMV7_PWM0_CH3
{
.channel = 3,
#ifdef CONFIG_SAMV7_PWM0_CH3_LONLY
.pin_h = 0,
.pin_l = GPIO_PWMC0_L3,
#else
.pin_h = GPIO_PWMC0_H3,
#ifdef CONFIG_SAMV7_PWM0_CH3_COMP
.pin_l = GPIO_PWMC0_L3,
#else
.pin_l = 0,
#endif
#endif
},
#endif
@ -227,44 +247,64 @@ static struct sam_pwm_channel_s g_pwm1_channels[] =
#ifdef CONFIG_SAMV7_PWM1_CH0
{
.channel = 0,
#ifdef CONFIG_SAMV7_PWM1_CH0_LONLY
.pin_h = 0,
.pin_l = GPIO_PWMC1_L0,
#else
.pin_h = GPIO_PWMC1_H0,
#ifdef CONFIG_SAMV7_PWM1_CH0_COMP
.pin_l = GPIO_PWMC1_L0,
#else
.pin_l = 0,
#endif
#endif
},
#endif
#ifdef CONFIG_SAMV7_PWM1_CH1
{
.channel = 1,
#ifdef CONFIG_SAMV7_PWM1_CH1_LONLY
.pin_h = 0,
.pin_l = GPIO_PWMC1_L1,
#else
.pin_h = GPIO_PWMC1_H1,
#ifdef CONFIG_SAMV7_PWM1_CH1_COMP
.pin_l = GPIO_PWMC1_L1,
#else
.pin_l = 0,
#endif
#endif
},
#endif
#ifdef CONFIG_SAMV7_PWM1_CH2
{
.channel = 2,
#ifdef CONFIG_SAMV7_PWM1_CH2_LONLY
.pin_h = 0,
.pin_l = GPIO_PWMC1_L2,
#else
.pin_h = GPIO_PWMC1_H2,
#ifdef CONFIG_SAMV7_PWM1_CH2_COMP
.pin_l = GPIO_PWMC1_L2,
#else
.pin_l = 0,
#endif
#endif
},
#endif
#ifdef CONFIG_SAMV7_PWM1_CH3
{
.channel = 3,
#ifdef CONFIG_SAMV7_PWM1_CH3_LONLY
.pin_h = 0,
.pin_l = GPIO_PWMC1_L3,
#else
.pin_h = GPIO_PWMC1_H3,
#ifdef CONFIG_SAMV7_PWM1_CH3_COMP
.pin_l = GPIO_PWMC1_L3,
#else
.pin_l = 0,
#endif
#endif
},
#endif