spacing changes and text fix

4 files changed, 79 insertions, 67 deletions

diff --git a/ports/stm32f4/common-hal/busio/I2C.c b/ports/stm32f4/common-hal/busio/I2C.c
index 68a27c673..bf843ff5c 100644
--- a/ports/stm32f4/common-hal/busio/I2C.c
+++ b/ports/stm32f4/common-hal/busio/I2C.c
@@ -46,11 +46,11 @@ STATIC void i2c_clock_disable(uint8_t mask);
 
 void i2c_reset(void) {
     uint16_t never_reset_mask = 0x00;
-    for(int i=0;i<MAX_I2C;i++) {
+    for(int i = 0; i < MAX_I2C; i++) {
         if (!never_reset_i2c[i]) {
             reserved_i2c[i] = false;
         } else {
-            never_reset_mask |= 1<<i;
+            never_reset_mask |= 1 << i;
         }
     }
     i2c_clock_disable(ALL_CLOCKS & ~(never_reset_mask));
@@ -61,17 +61,17 @@ void common_hal_busio_i2c_construct(busio_i2c_obj_t *self,
 
     //match pins to I2C objects
     I2C_TypeDef * I2Cx;
-    uint8_t sda_len = sizeof(mcu_i2c_sda_list)/sizeof(*mcu_i2c_sda_list);
-    uint8_t scl_len = sizeof(mcu_i2c_scl_list)/sizeof(*mcu_i2c_scl_list);
+    uint8_t sda_len = sizeof(mcu_i2c_sda_list) / sizeof(*mcu_i2c_sda_list);
+    uint8_t scl_len = sizeof(mcu_i2c_scl_list) / sizeof(*mcu_i2c_scl_list);
     bool i2c_taken = false;
 
-    for(uint i=0; i<sda_len;i++) {
+    for (uint i = 0; i < sda_len; i++) {
         if (mcu_i2c_sda_list[i].pin == sda) {
-            for(uint j=0; j<scl_len;j++) {
+            for (uint j = 0; j < scl_len; j++) {
                 if ((mcu_i2c_scl_list[j].pin == scl)
                     && (mcu_i2c_scl_list[j].i2c_index == mcu_i2c_sda_list[i].i2c_index)) {
                     //keep looking if the I2C is taken, could be another SCL that works
-                    if(reserved_i2c[mcu_i2c_scl_list[i].i2c_index-1]) {
+                    if (reserved_i2c[mcu_i2c_scl_list[i].i2c_index - 1]) {
                         i2c_taken = true;
                         continue;
                     }
@@ -84,8 +84,8 @@ void common_hal_busio_i2c_construct(busio_i2c_obj_t *self,
     }
 
     //handle typedef selection, errors
-    if(self->sda!=NULL && self->scl!=NULL ) {
-        I2Cx = mcu_i2c_banks[self->sda->i2c_index-1];
+    if (self->sda != NULL && self->scl != NULL ) {
+        I2Cx = mcu_i2c_banks[self->sda->i2c_index - 1];
     } else {
         if (i2c_taken) {
             mp_raise_ValueError(translate("Hardware busy, try alternative pins"));
@@ -111,7 +111,7 @@ void common_hal_busio_i2c_construct(busio_i2c_obj_t *self,
     HAL_GPIO_Init(pin_port(scl->port), &GPIO_InitStruct);
 
     //Note: due to I2C soft reboot issue, do not relocate clock init.
-    i2c_clock_enable(1<<(self->sda->i2c_index - 1));
+    i2c_clock_enable(1 << (self->sda->i2c_index - 1));
     reserved_i2c[self->sda->i2c_index - 1] = true;
 
     self->handle.Instance = I2Cx;
@@ -124,7 +124,7 @@ void common_hal_busio_i2c_construct(busio_i2c_obj_t *self,
     self->handle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
     self->handle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
     self->handle.State = HAL_I2C_STATE_RESET;
-    if(HAL_I2C_Init(&(self->handle)) != HAL_OK) {
+    if (HAL_I2C_Init(&(self->handle)) != HAL_OK) {
         mp_raise_RuntimeError(translate("I2C Init Error"));
     }
     claim_pin(sda);
@@ -132,7 +132,7 @@ void common_hal_busio_i2c_construct(busio_i2c_obj_t *self,
 }
 
 void common_hal_busio_i2c_never_reset(busio_i2c_obj_t *self) {
-    for (size_t i = 0 ; i < MP_ARRAY_SIZE(mcu_i2c_banks); i++) {
+    for (size_t i = 0; i < MP_ARRAY_SIZE(mcu_i2c_banks); i++) {
         if (self->handle.Instance == mcu_i2c_banks[i]) {
             never_reset_i2c[i] = true;
 
@@ -152,7 +152,7 @@ void common_hal_busio_i2c_deinit(busio_i2c_obj_t *self) {
         return;
     }
 
-    i2c_clock_disable(1<<(self->sda->i2c_index - 1));
+    i2c_clock_disable(1 << (self->sda->i2c_index - 1));
     reserved_i2c[self->sda->i2c_index - 1] = false;
     never_reset_i2c[self->sda->i2c_index - 1] = false;
 
@@ -163,7 +163,7 @@ void common_hal_busio_i2c_deinit(busio_i2c_obj_t *self) {
 }
 
 bool common_hal_busio_i2c_probe(busio_i2c_obj_t *self, uint8_t addr) {
-    return HAL_I2C_IsDeviceReady(&(self->handle), (uint16_t)(addr<<1),2,2) == HAL_OK;
+    return HAL_I2C_IsDeviceReady(&(self->handle), (uint16_t)(addr << 1), 2, 2) == HAL_OK;
 }
 
 bool common_hal_busio_i2c_try_lock(busio_i2c_obj_t *self) {
@@ -195,13 +195,15 @@ void common_hal_busio_i2c_unlock(busio_i2c_obj_t *self) {
 
 uint8_t common_hal_busio_i2c_write(busio_i2c_obj_t *self, uint16_t addr,
                                    const uint8_t *data, size_t len, bool transmit_stop_bit) {
-    HAL_StatusTypeDef result = HAL_I2C_Master_Transmit(&(self->handle), (uint16_t)(addr<<1), (uint8_t *)data, (uint16_t)len, 500);
+    HAL_StatusTypeDef result = HAL_I2C_Master_Transmit(&(self->handle), (uint16_t)(addr << 1), 
+                                                        (uint8_t *)data, (uint16_t)len, 500);
     return result == HAL_OK ? 0 : MP_EIO;
 }
 
 uint8_t common_hal_busio_i2c_read(busio_i2c_obj_t *self, uint16_t addr,
         uint8_t *data, size_t len) {
-    return HAL_I2C_Master_Receive(&(self->handle), (uint16_t)(addr<<1), data, (uint16_t)len, 500) == HAL_OK ? 0 : MP_EIO;
+    return HAL_I2C_Master_Receive(&(self->handle), (uint16_t)(addr<<1), data, (uint16_t)len, 500) 
+                                    == HAL_OK ? 0 : MP_EIO;
 }
 
 STATIC void i2c_clock_enable(uint8_t mask) {
@@ -231,12 +233,18 @@ STATIC void i2c_clock_enable(uint8_t mask) {
 
 STATIC void i2c_clock_disable(uint8_t mask) {
     #ifdef I2C1
-    if (mask & 1<<0) __HAL_RCC_I2C1_CLK_DISABLE();
+    if (mask & 1<<0) {
+        __HAL_RCC_I2C1_CLK_DISABLE();
+    }
     #endif
     #ifdef I2C2
-    if (mask & 1<<1) __HAL_RCC_I2C2_CLK_DISABLE();
+    if (mask & 1<<1) {
+        __HAL_RCC_I2C2_CLK_DISABLE();
+    }
     #endif
     #ifdef I2C3
-    if (mask & 1<<2) __HAL_RCC_I2C3_CLK_DISABLE();
+    if (mask & 1<<2) {
+        __HAL_RCC_I2C3_CLK_DISABLE();
+    }
     #endif
 }
diff --git a/ports/stm32f4/common-hal/busio/SPI.c b/ports/stm32f4/common-hal/busio/SPI.c
index 78c635263..b7d61fbf9 100644
--- a/ports/stm32f4/common-hal/busio/SPI.c
+++ b/ports/stm32f4/common-hal/busio/SPI.c
@@ -87,11 +87,11 @@ STATIC uint32_t stm32_baud_to_spi_div(uint32_t baudrate, uint16_t * prescaler, u
 
 void spi_reset(void) {
     uint16_t never_reset_mask = 0x00;
-    for(int i=0;i<MAX_SPI;i++) {
+    for (int i = 0; i < MAX_SPI; i++) {
         if (!never_reset_spi[i]) {
             reserved_spi[i] = false;
         } else {
-            never_reset_mask |= 1<<i;
+            never_reset_mask |= 1 << i;
         }
     }
     spi_clock_disable(ALL_CLOCKS & ~(never_reset_mask));
@@ -110,20 +110,20 @@ void common_hal_busio_spi_construct(busio_spi_obj_t *self,
     bool spi_taken = false;
 
     //SCK is not optional. MOSI and MISO are
-    for (uint i=0; i<sck_len;i++) {
+    for (uint i = 0; i < sck_len; i++) {
         if (mcu_spi_sck_list[i].pin == sck) {
             //if both MOSI and MISO exist, loop search normally
             if ((mosi != mp_const_none) && (miso != mp_const_none)) {
                 //MOSI
-                for (uint j=0; j<mosi_len;j++) {
+                for (uint j = 0; j < mosi_len; j++) {
                     if (mcu_spi_mosi_list[j].pin == mosi) {
                         //MISO
-                        for (uint k=0; k<miso_len;k++) {
+                        for (uint k = 0; k < miso_len; k++) {
                             if ((mcu_spi_miso_list[k].pin == miso) //everything needs the same index
                                 && (mcu_spi_sck_list[i].spi_index == mcu_spi_mosi_list[j].spi_index)
                                 && (mcu_spi_sck_list[i].spi_index == mcu_spi_miso_list[k].spi_index)) {
                                 //keep looking if the SPI is taken, edge case
-                                if (reserved_spi[mcu_spi_sck_list[i].spi_index-1]) {
+                                if (reserved_spi[mcu_spi_sck_list[i].spi_index - 1]) {
                                     spi_taken = true;
                                     continue;
                                 }
@@ -138,11 +138,11 @@ void common_hal_busio_spi_construct(busio_spi_obj_t *self,
                 }
             // if just MISO, reduce search
             } else if (miso != mp_const_none) {
-                for (uint j=0; j<miso_len;j++) {
+                for (uint j = 0; j < miso_len; j++) {
                     if ((mcu_spi_miso_list[j].pin == miso) //only SCK and MISO need the same index
                         && (mcu_spi_sck_list[i].spi_index == mcu_spi_miso_list[j].spi_index)) {
                         //keep looking if the SPI is taken, edge case
-                        if (reserved_spi[mcu_spi_sck_list[i].spi_index-1]) {
+                        if (reserved_spi[mcu_spi_sck_list[i].spi_index - 1]) {
                             spi_taken = true;
                             continue;
                         }
@@ -155,11 +155,11 @@ void common_hal_busio_spi_construct(busio_spi_obj_t *self,
                 }  
             // if just MOSI, reduce search
             } else if (mosi != mp_const_none) {
-                for (uint j=0; j<mosi_len;j++) {
+                for (uint j = 0; j < mosi_len; j++) {
                     if ((mcu_spi_mosi_list[j].pin == mosi) //only SCK and MOSI need the same index
                         && (mcu_spi_sck_list[i].spi_index == mcu_spi_mosi_list[j].spi_index)) {
                         //keep looking if the SPI is taken, edge case
-                        if (reserved_spi[mcu_spi_sck_list[i].spi_index-1]) {
+                        if (reserved_spi[mcu_spi_sck_list[i].spi_index - 1]) {
                             spi_taken = true;
                             continue;
                         }
@@ -178,10 +178,10 @@ void common_hal_busio_spi_construct(busio_spi_obj_t *self,
     }
 
     //handle typedef selection, errors
-    if ( (self->sck!=NULL && self->mosi!=NULL && self->miso != NULL) ||
-        (self->sck!=NULL && self->mosi!=NULL && miso == mp_const_none) ||
-        (self->sck!=NULL && self->miso!=NULL && mosi == mp_const_none)) {
-        SPIx = mcu_spi_banks[self->sck->spi_index-1];
+    if ( (self->sck != NULL && self->mosi != NULL && self->miso != NULL) ||
+        (self->sck != NULL && self->mosi != NULL && miso == mp_const_none) ||
+        (self->sck != NULL && self->miso != NULL && mosi == mp_const_none)) {
+        SPIx = mcu_spi_banks[self->sck->spi_index - 1];
     } else {
         if (spi_taken) {
             mp_raise_ValueError(translate("Hardware busy, try alternative pins"));
@@ -217,7 +217,7 @@ void common_hal_busio_spi_construct(busio_spi_obj_t *self,
         HAL_GPIO_Init(pin_port(miso->port), &GPIO_InitStruct);
     }
 
-    spi_clock_enable(1<<(self->sck->spi_index - 1));
+    spi_clock_enable(1 << (self->sck->spi_index - 1));
     reserved_spi[self->sck->spi_index - 1] = true;
     
     self->handle.Instance = SPIx; 
@@ -237,7 +237,7 @@ void common_hal_busio_spi_construct(busio_spi_obj_t *self,
     {
         mp_raise_ValueError(translate("SPI Init Error"));
     }
-    self->baudrate = (get_busclock(SPIx)/16);
+    self->baudrate = (get_busclock(SPIx) / 16);
     self->prescaler = 16;
     self->polarity = 0;
     self->phase = 0;
@@ -253,7 +253,7 @@ void common_hal_busio_spi_construct(busio_spi_obj_t *self,
 }
 
 void common_hal_busio_spi_never_reset(busio_spi_obj_t *self) {
-    for (size_t i = 0 ; i < MP_ARRAY_SIZE(mcu_spi_banks); i++) {
+    for (size_t i = 0; i < MP_ARRAY_SIZE(mcu_spi_banks); i++) {
         if (mcu_spi_banks[i] == self->handle.Instance) {
             never_reset_spi[i] = true;
             never_reset_pin_number(self->sck->pin->port, self->sck->pin->number);
diff --git a/ports/stm32f4/common-hal/busio/UART.c b/ports/stm32f4/common-hal/busio/UART.c
index a3e2d96be..44139a642 100644
--- a/ports/stm32f4/common-hal/busio/UART.c
+++ b/ports/stm32f4/common-hal/busio/UART.c
@@ -79,8 +79,8 @@ void common_hal_busio_uart_construct(busio_uart_obj_t* self,
     //match pins to UART objects
     USART_TypeDef * USARTx;
 
-    uint8_t tx_len = sizeof(mcu_uart_tx_list)/sizeof(*mcu_uart_tx_list);
-    uint8_t rx_len = sizeof(mcu_uart_rx_list)/sizeof(*mcu_uart_rx_list);
+    uint8_t tx_len = sizeof(mcu_uart_tx_list) / sizeof(*mcu_uart_tx_list);
+    uint8_t rx_len = sizeof(mcu_uart_rx_list) / sizeof(*mcu_uart_rx_list);
     bool uart_taken = false;
     uint8_t uart_index = 0; //origin 0 corrected
 
diff --git a/ports/stm32f4/common-hal/pulseio/PWMOut.c b/ports/stm32f4/common-hal/pulseio/PWMOut.c
index 309848236..a53bfc423 100644
--- a/ports/stm32f4/common-hal/pulseio/PWMOut.c
+++ b/ports/stm32f4/common-hal/pulseio/PWMOut.c
@@ -69,15 +69,15 @@ STATIC uint32_t timer_get_source_freq(uint32_t tim_id) {
 
 STATIC uint32_t timer_get_internal_duty(uint16_t duty, uint32_t period) {
     //duty cycle is duty/0xFFFF fraction x (number of pulses per period)
-    return (duty*period)/((1<<16)-1);
+    return (duty*period) / ((1 << 16) - 1);
 }
 
 STATIC void timer_get_optimal_divisors(uint32_t*period, uint32_t*prescaler, 
                                        uint32_t frequency, uint32_t source_freq) {
     //Find the largest possible period supported by this frequency
-    for (int i=0; i<(1 << 16);i++) {
-        *period = source_freq/(i*frequency);
-        if (*period < (1 << 16) && *period>=2) {
+    for (int i = 0; i < (1 << 16); i++) {
+        *period = source_freq / (i * frequency);
+        if (*period < (1 << 16) && *period >= 2) {
             *prescaler = i;
             break;
         }
@@ -89,12 +89,12 @@ STATIC void timer_get_optimal_divisors(uint32_t*period, uint32_t*prescaler,
 
 void pwmout_reset(void) {
     uint16_t never_reset_mask = 0x00;
-    for(int i=0;i<TIM_BANK_ARRAY_LEN;i++) {
+    for (int i = 0; i < TIM_BANK_ARRAY_LEN; i++) {
         if (!never_reset_tim[i]) {
             reserved_tim[i] = 0x00;
             tim_frequencies[i] = 0x00;
         } else {
-            never_reset_mask |= 1<<i;
+            never_reset_mask |= 1 << i;
         }
     }
     tim_clock_disable(ALL_CLOCKS & ~(never_reset_mask));
@@ -106,23 +106,23 @@ pwmout_result_t common_hal_pulseio_pwmout_construct(pulseio_pwmout_obj_t* self,
                                                     uint32_t frequency,
                                                     bool variable_frequency) {
     TIM_TypeDef * TIMx;
-    uint8_t tim_num = sizeof(mcu_tim_pin_list)/sizeof(*mcu_tim_pin_list);
+    uint8_t tim_num = sizeof(mcu_tim_pin_list) / sizeof(*mcu_tim_pin_list);
     bool tim_chan_taken = false;
     bool tim_taken_f_mismatch = false;
     bool var_freq_mismatch = false;
     bool first_time_setup = true;
 
-    for(uint i = 0; i < tim_num; i++) {
+    for (uint i = 0; i < tim_num; i++) {
         mcu_tim_pin_obj_t l_tim = mcu_tim_pin_list[i];
-        uint8_t l_tim_index = l_tim.tim_index-1;
-        uint8_t l_tim_channel = l_tim.channel_index-1;
+        uint8_t l_tim_index = l_tim.tim_index - 1;
+        uint8_t l_tim_channel = l_tim.channel_index - 1;
 
         //if pin is same
         if (l_tim.pin == pin) {
             //check if the timer has a channel active
             if (reserved_tim[l_tim_index] != 0) {
                 //is it the same channel? (or all channels reserved by a var-freq)
-                if (reserved_tim[l_tim_index] & 1<<(l_tim_channel)) {
+                if (reserved_tim[l_tim_index] & 1 << (l_tim_channel)) {
                     tim_chan_taken = true;
                     continue; //keep looking, might be another viable option
                 }
@@ -145,21 +145,21 @@ pwmout_result_t common_hal_pulseio_pwmout_construct(pulseio_pwmout_obj_t* self,
     }
 
     //handle valid/invalid timer instance
-    if (self->tim!=NULL) {
+    if (self->tim != NULL) {
         //create instance
-        TIMx = mcu_tim_banks[self->tim->tim_index-1];
+        TIMx = mcu_tim_banks[self->tim->tim_index - 1];
         //reserve timer/channel
         if (variable_frequency) {
-            reserved_tim[self->tim->tim_index-1] = 0x0F;
+            reserved_tim[self->tim->tim_index - 1] = 0x0F;
         } else {
-            reserved_tim[self->tim->tim_index-1] |= 1<<(self->tim->channel_index-1);
+            reserved_tim[self->tim->tim_index - 1] |= 1 << (self->tim->channel_index - 1);
         }
-        tim_frequencies[self->tim->tim_index-1] = frequency;
+        tim_frequencies[self->tim->tim_index - 1] = frequency;
     } else { //no match found
         if (tim_chan_taken) {
             mp_raise_ValueError(translate("No more timers available on this pin."));
         } else if (tim_taken_f_mismatch) {
-            mp_raise_ValueError(translate("Frequency must be the same as as the existing PWMOut using this timer"));
+            mp_raise_ValueError(translate("Frequency must match existing PWMOut using this timer"));
         } else if (var_freq_mismatch) {
             mp_raise_ValueError(translate("Cannot vary frequency on a timer that is already in use"));
         } else {
@@ -175,14 +175,15 @@ pwmout_result_t common_hal_pulseio_pwmout_construct(pulseio_pwmout_obj_t* self,
     GPIO_InitStruct.Alternate = self->tim->altfn_index;
     HAL_GPIO_Init(pin_port(pin->port), &GPIO_InitStruct);
 
-    tim_clock_enable(1<<(self->tim->tim_index - 1));
+    tim_clock_enable(1 << (self->tim->tim_index - 1));
 
     //translate channel into handle value
     self->channel = 4 * (self->tim->channel_index - 1);
 
     uint32_t prescaler = 0; //prescaler is 15 bit
     uint32_t period = 0; //period is 16 bit
-    timer_get_optimal_divisors(&period, &prescaler,frequency,timer_get_source_freq(self->tim->tim_index));
+    timer_get_optimal_divisors(&period, &prescaler, frequency, 
+                            timer_get_source_freq(self->tim->tim_index));
 
     //Timer init
     self->handle.Instance = TIMx;
@@ -223,7 +224,7 @@ pwmout_result_t common_hal_pulseio_pwmout_construct(pulseio_pwmout_obj_t* self,
 }
 
 void common_hal_pulseio_pwmout_never_reset(pulseio_pwmout_obj_t *self) {
-    for(size_t i = 0 ; i < TIM_BANK_ARRAY_LEN; i++) {
+    for (size_t i = 0; i < TIM_BANK_ARRAY_LEN; i++) {
         if (mcu_tim_banks[i] == self->handle.Instance) {
             never_reset_tim[i] = true;
             never_reset_pin_number(self->tim->pin->port, self->tim->pin->number);
@@ -233,7 +234,7 @@ void common_hal_pulseio_pwmout_never_reset(pulseio_pwmout_obj_t *self) {
 }
 
 void common_hal_pulseio_pwmout_reset_ok(pulseio_pwmout_obj_t *self) {
-    for(size_t i = 0 ; i < TIM_BANK_ARRAY_LEN; i++) {
+    for(size_t i = 0; i < TIM_BANK_ARRAY_LEN; i++) {
         if (mcu_tim_banks[i] == self->handle.Instance) {
             never_reset_tim[i] = false;
             break;
@@ -251,18 +252,18 @@ void common_hal_pulseio_pwmout_deinit(pulseio_pwmout_obj_t* self) {
     }
     //var freq shuts down entire timer, others just their channel
     if (self->variable_frequency) {
-        reserved_tim[self->tim->tim_index-1] = 0x00;
+        reserved_tim[self->tim->tim_index - 1] = 0x00;
     } else {
-        reserved_tim[self->tim->tim_index-1] &= ~(1<<self->tim->channel_index);
+        reserved_tim[self->tim->tim_index - 1] &= ~(1 << self->tim->channel_index);
         HAL_TIM_PWM_Stop(&self->handle, self->channel);
     }
     reset_pin_number(self->tim->pin->port,self->tim->pin->number);
     self->tim = mp_const_none;
 
     //if reserved timer has no active channels, we can disable it
-    if (!reserved_tim[self->tim->tim_index-1]) {
-        tim_frequencies[self->tim->tim_index-1] = 0x00;
-        tim_clock_disable(1<<(self->tim->tim_index-1));
+    if (!reserved_tim[self->tim->tim_index - 1]) {
+        tim_frequencies[self->tim->tim_index - 1] = 0x00;
+        tim_clock_disable(1 << (self->tim->tim_index - 1));
     }
 }
 
@@ -278,11 +279,14 @@ uint16_t common_hal_pulseio_pwmout_get_duty_cycle(pulseio_pwmout_obj_t* self) {
 
 void common_hal_pulseio_pwmout_set_frequency(pulseio_pwmout_obj_t* self, uint32_t frequency) {
     //don't halt setup for the same frequency
-    if (frequency == self->frequency) return;
+    if (frequency == self->frequency) { 
+        return;
+    }
 
     uint32_t prescaler = 0;
     uint32_t period = 0;
-    timer_get_optimal_divisors(&period, &prescaler,frequency,timer_get_source_freq(self->tim->tim_index));
+    timer_get_optimal_divisors(&period, &prescaler, frequency, 
+                                timer_get_source_freq(self->tim->tim_index));
 
     //shut down
     HAL_TIM_PWM_Stop(&self->handle, self->channel);
@@ -305,7 +309,7 @@ void common_hal_pulseio_pwmout_set_frequency(pulseio_pwmout_obj_t* self, uint32_
         mp_raise_ValueError(translate("Could not restart PWM"));
     }
 
-    tim_frequencies[self->tim->tim_index-1] = frequency;
+    tim_frequencies[self->tim->tim_index - 1] = frequency;
     self->frequency = frequency;
     self->period = period;
 }