sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

samv7: add support for complementary PWM output

Browse Source 
SAMv7 PWM driver supports complementary PWM output if both pins (H and L)
are defined and configured. This commit adds a configuration option to
configure the complementary L pin.

The pin definition has to be provided by board level support.

Signed-off-by: Michal Lenc <michallenc@seznam.cz>
This commit is contained in:
Michal Lenc 2023-02-20 13:01:11 +01:00 committed by Xiang Xiao
parent 60bd4ac13d
commit db6919648b
2 changed files with 125 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

64
arch/arm/src/samv7/Kconfig
View File

@ -612,18 +612,50 @@ config SAMV7_PWM0_CH0
bool "PWM0 Channel 0"
default n
if SAMV7_PWM0_CH0
config SAMV7_PWM0_CH0_COMP
bool "Use complementary output"
default n
endif
config SAMV7_PWM0_CH1
bool "PWM0 Channel 1"
default n
if SAMV7_PWM0_CH1
config SAMV7_PWM0_CH1_COMP
bool "Use complementary output"
default n
endif
config SAMV7_PWM0_CH2
bool "PWM0 Channel 2"
default n
if SAMV7_PWM0_CH2
config SAMV7_PWM0_CH2_COMP
bool "Use complementary output"
default n
endif
config SAMV7_PWM0_CH3
bool "PWM0 Channel 3"
default n
if SAMV7_PWM0_CH3
config SAMV7_PWM0_CH3_COMP
bool "Use complementary output"
default n
endif
endif
menuconfig SAMV7_PWM1
@ -639,18 +671,50 @@ config SAMV7_PWM1_CH0
bool "PWM1 Channel 0"
default n
if SAMV7_PWM1_CH0
config SAMV7_PWM1_CH0_COMP
bool "Use complementary output"
default n
endif
config SAMV7_PWM1_CH1
bool "PWM1 Channel 1"
default n
if SAMV7_PWM1_CH1
config SAMV7_PWM1_CH1_COMP
bool "Use complementary output"
default n
endif
config SAMV7_PWM1_CH2
bool "PWM1 Channel 2"
default n
if SAMV7_PWM1_CH2
config SAMV7_PWM1_CH2_COMP
bool "Use complementary output"
default n
endif
config SAMV7_PWM1_CH3
bool "PWM1 Channel 3"
default n
if SAMV7_PWM1_CH3
config SAMV7_PWM1_CH3_COMP
bool "Use complementary output"
default n
endif
endif
config SAMV7_QSPI

74
arch/arm/src/samv7/sam_pwm.c
View File

@ -73,7 +73,8 @@
struct sam_pwm_channel_s
{
uint8_t channel; /* Number of PWM module */
gpio_pinset_t pin; /* PWM output pin */
gpio_pinset_t pin_h; /* PWM H output pin */
gpio_pinset_t pin_l; /* PWM L output pin */
};
struct sam_pwm_s
@ -114,25 +115,45 @@ static struct sam_pwm_channel_s g_pwm0_channels[] =
#ifdef CONFIG_SAMV7_PWM0_CH0
{
.channel = 0,
.pin = GPIO_PWMC0_H0,
.pin_h = GPIO_PWMC0_H0,
#ifdef CONFIG_SAMV7_PWM0_CH0_COMP
.pin_l = GPIO_PWMC0_L0,
#else
.pin_l = 0,
#endif
},
#endif
#ifdef CONFIG_SAMV7_PWM0_CH1
{
.channel = 1,
.pin = GPIO_PWMC0_H1,
.pin_h = GPIO_PWMC0_H1,
#ifdef CONFIG_SAMV7_PWM0_CH1_COMP
.pin_l = GPIO_PWMC0_L1,
#else
.pin_l = 0,
#endif
},
#endif
#ifdef CONFIG_SAMV7_PWM0_CH2
{
.channel = 2,
.pin = GPIO_PWMC0_H2,
.pin_h = GPIO_PWMC0_H2,
#ifdef CONFIG_SAMV7_PWM0_CH2_COMP
.pin_l = GPIO_PWMC0_L2,
#else
.pin_l = 0,
#endif
},
#endif
#ifdef CONFIG_SAMV7_PWM0_CH3
{
.channel = 3,
.pin = GPIO_PWMC0_H3,
.pin_h = GPIO_PWMC0_H3,
#ifdef CONFIG_SAMV7_PWM0_CH3_COMP
.pin_l = GPIO_PWMC0_L3,
#else
.pin_l = 0,
#endif
},
#endif
};
@ -153,25 +174,45 @@ static struct sam_pwm_channel_s g_pwm1_channels[] =
#ifdef CONFIG_SAMV7_PWM1_CH0
{
.channel = 0,
.pin = GPIO_PWMC1_H0
.pin_h = GPIO_PWMC1_H0,
#ifdef CONFIG_SAMV7_PWM1_CH0_COMP
.pin_l = GPIO_PWMC1_L0,
#else
.pin_l = 0,
#endif
},
#endif
#ifdef CONFIG_SAMV7_PWM1_CH1
{
.channel = 1,
.pin = GPIO_PWMC1_H1
.pin_h = GPIO_PWMC1_H1,
#ifdef CONFIG_SAMV7_PWM1_CH1_COMP
.pin_l = GPIO_PWMC1_L1,
#else
.pin_l = 0,
#endif
},
#endif
#ifdef CONFIG_SAMV7_PWM1_CH2
{
.channel = 2,
.pin = GPIO_PWMC1_H2
.pin_h = GPIO_PWMC1_H2,
#ifdef CONFIG_SAMV7_PWM1_CH2_COMP
.pin_l = GPIO_PWMC1_L2,
#else
.pin_l = 0,
#endif
},
#endif
#ifdef CONFIG_SAMV7_PWM1_CH3
{
.channel = 3,
.pin = GPIO_PWMC1_H3
.pin_h = GPIO_PWMC1_H3,
#ifdef CONFIG_SAMV7_PWM1_CH3_COMP
.pin_l = GPIO_PWMC1_L3,
#else
.pin_l = 0,
#endif
},
#endif
}; /* CONFIG_SAMV7_PWM1 */
@ -348,7 +389,8 @@ static void pwm_set_output(struct pwm_lowerhalf_s *dev, uint8_t channel,
static int pwm_setup(struct pwm_lowerhalf_s *dev)
{
struct sam_pwm_s *priv = (struct sam_pwm_s *)dev;
gpio_pinset_t pin = 0;
gpio_pinset_t pin_h = 0;
gpio_pinset_t pin_l = 0;
uint8_t channel;
uint32_t regval;
@ -364,11 +406,17 @@ static int pwm_setup(struct pwm_lowerhalf_s *dev)
for (int i = 0; i < priv->channels_num; i++)
{
pin = priv->channels[i].pin;
pin_h = priv->channels[i].pin_h;
pin_l = priv->channels[i].pin_l;
if (pin != 0)
if (pin_h != 0)
{
sam_configgpio(pin);
sam_configgpio(pin_h);
}
if (pin_l != 0)
{
sam_configgpio(pin_l);
}
channel = priv->channels[i].channel;