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Support UART H/W module shared by multiple serial S/W objects 

1. With GCC_ARM and uARM, some greentea tests fail due to no support for this.
2. Bind UART H/W module to correct serial S/W object for interrupt.
pull/3290/head
ccli8 2016-11-04 13:08:54 +08:00 committed by Anna Bridge
parent bfba208514
commit 1e480585db
2 changed files with 144 additions and 106 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

66
targets/TARGET_NUVOTON/TARGET_M451/serial_api.c
View File

@ -31,6 +31,7 @@
#endif #endif
struct nu_uart_var { struct nu_uart_var {
uint32_t ref_cnt; // Reference count of the H/W module
serial_t * obj; serial_t * obj;
uint32_t fifo_size_tx; uint32_t fifo_size_tx;
uint32_t fifo_size_rx; uint32_t fifo_size_rx;
@ -80,6 +81,7 @@ static int serial_is_irq_en(serial_t *obj, SerialIrq irq);
#endif #endif
static struct nu_uart_var uart0_var = { static struct nu_uart_var uart0_var = {
.ref_cnt = 0,
.obj = NULL, .obj = NULL,
.fifo_size_tx = 16, .fifo_size_tx = 16,
.fifo_size_rx = 16, .fifo_size_rx = 16,
@ -91,6 +93,7 @@ static struct nu_uart_var uart0_var = {
#endif #endif
}; };
static struct nu_uart_var uart1_var = { static struct nu_uart_var uart1_var = {
.ref_cnt = 0,
.obj = NULL, .obj = NULL,
.fifo_size_tx = 16, .fifo_size_tx = 16,
.fifo_size_rx = 16, .fifo_size_rx = 16,
@ -102,6 +105,7 @@ static struct nu_uart_var uart1_var = {
#endif #endif
}; };
static struct nu_uart_var uart2_var = { static struct nu_uart_var uart2_var = {
.ref_cnt = 0,
.obj = NULL, .obj = NULL,
.fifo_size_tx = 16, .fifo_size_tx = 16,
.fifo_size_rx = 16, .fifo_size_rx = 16,
@ -113,6 +117,7 @@ static struct nu_uart_var uart2_var = {
#endif #endif
}; };
static struct nu_uart_var uart3_var = { static struct nu_uart_var uart3_var = {
.ref_cnt = 0,
.obj = NULL, .obj = NULL,
.fifo_size_tx = 16, .fifo_size_tx = 16,
.fifo_size_rx = 16, .fifo_size_rx = 16,
@ -142,7 +147,7 @@ extern void mbed_sdk_init(void);
void serial_init(serial_t *obj, PinName tx, PinName rx) void serial_init(serial_t *obj, PinName tx, PinName rx)
{ {
// NOTE: serial_init() gets called from _sys_open() timing of which is before main()/mbed_hal_init(). // NOTE: With armcc, serial_init() gets called from _sys_open() timing of which is before main()/mbed_sdk_init().
mbed_sdk_init(); mbed_sdk_init();
// Determine which UART_x the pins are used for // Determine which UART_x the pins are used for
@ -156,6 +161,9 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
MBED_ASSERT(modinit != NULL); MBED_ASSERT(modinit != NULL);
MBED_ASSERT(modinit->modname == obj->serial.uart); MBED_ASSERT(modinit->modname == obj->serial.uart);
struct nu_uart_var *var = (struct nu_uart_var *) modinit->var;
if (! var->ref_cnt) {
// Reset this module // Reset this module
SYS_ResetModule(modinit->rsetidx); SYS_ResetModule(modinit->rsetidx);
@ -166,22 +174,18 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
pinmap_pinout(tx, PinMap_UART_TX); pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX); pinmap_pinout(rx, PinMap_UART_RX);
// FIXME: Why PullUp?
//if (tx != NC) {
// pin_mode(tx, PullUp);
//}
//if (rx != NC) {
// pin_mode(rx, PullUp);
//}
obj->serial.pin_tx = tx; obj->serial.pin_tx = tx;
obj->serial.pin_rx = rx; obj->serial.pin_rx = rx;
}
var->ref_cnt ++;
// Configure the UART module and set its baudrate // Configure the UART module and set its baudrate
serial_baud(obj, 9600); serial_baud(obj, 9600);
// Configure data bits, parity, and stop bits // Configure data bits, parity, and stop bits
serial_format(obj, 8, ParityNone, 1); serial_format(obj, 8, ParityNone, 1);
obj->serial.vec = ((struct nu_uart_var *) modinit->var)->vec; obj->serial.vec = var->vec;
#if DEVICE_SERIAL_ASYNCH #if DEVICE_SERIAL_ASYNCH
obj->serial.dma_usage_tx = DMA_USAGE_NEVER; obj->serial.dma_usage_tx = DMA_USAGE_NEVER;
@ -192,19 +196,28 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
#endif #endif
// For stdio management // For stdio management
if (obj == &stdio_uart) { if (obj->serial.uart == STDIO_UART) {
stdio_uart_inited = 1; stdio_uart_inited = 1;
/* NOTE: Not required anymore because stdio_uart will be manually initialized in mbed-drivers/source/retarget.cpp from mbed beta */ memcpy(&stdio_uart, obj, sizeof(serial_t));
//memcpy(&stdio_uart, obj, sizeof(serial_t));
} }
if (var->ref_cnt) {
// Mark this module to be inited. // Mark this module to be inited.
int i = modinit - uart_modinit_tab; int i = modinit - uart_modinit_tab;
uart_modinit_mask |= 1 << i; uart_modinit_mask |= 1 << i;
}
} }
void serial_free(serial_t *obj) void serial_free(serial_t *obj)
{ {
const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab);
MBED_ASSERT(modinit != NULL);
MBED_ASSERT(modinit->modname == obj->serial.uart);
struct nu_uart_var *var = (struct nu_uart_var *) modinit->var;
var->ref_cnt --;
if (! var->ref_cnt) {
#if DEVICE_SERIAL_ASYNCH #if DEVICE_SERIAL_ASYNCH
if (obj->serial.dma_chn_id_tx != DMA_ERROR_OUT_OF_CHANNELS) { if (obj->serial.dma_chn_id_tx != DMA_ERROR_OUT_OF_CHANNELS) {
dma_channel_free(obj->serial.dma_chn_id_tx); dma_channel_free(obj->serial.dma_chn_id_tx);
@ -218,25 +231,26 @@ void serial_free(serial_t *obj)
UART_Close((UART_T *) NU_MODBASE(obj->serial.uart)); UART_Close((UART_T *) NU_MODBASE(obj->serial.uart));
const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab);
MBED_ASSERT(modinit != NULL);
MBED_ASSERT(modinit->modname == obj->serial.uart);
UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), (UART_INTEN_RDAIEN_Msk | UART_INTEN_THREIEN_Msk | UART_INTEN_RXTOIEN_Msk)); UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), (UART_INTEN_RDAIEN_Msk | UART_INTEN_THREIEN_Msk | UART_INTEN_RXTOIEN_Msk));
NVIC_DisableIRQ(modinit->irq_n); NVIC_DisableIRQ(modinit->irq_n);
// Disable IP clock // Disable IP clock
CLK_DisableModuleClock(modinit->clkidx); CLK_DisableModuleClock(modinit->clkidx);
}
((struct nu_uart_var *) modinit->var)->obj = NULL; if (var->obj == obj) {
var->obj = NULL;
}
if (obj == &stdio_uart) { if (obj->serial.uart == STDIO_UART) {
stdio_uart_inited = 0; stdio_uart_inited = 0;
} }
if (! var->ref_cnt) {
// Mark this module to be deinited. // Mark this module to be deinited.
int i = modinit - uart_modinit_tab; int i = modinit - uart_modinit_tab;
uart_modinit_mask &= ~(1 << i); uart_modinit_mask &= ~(1 << i);
}
} }
void serial_baud(serial_t *obj, int baudrate) { void serial_baud(serial_t *obj, int baudrate) {
@ -317,7 +331,6 @@ void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
MBED_ASSERT(modinit != NULL); MBED_ASSERT(modinit != NULL);
MBED_ASSERT(modinit->modname == obj->serial.uart); MBED_ASSERT(modinit->modname == obj->serial.uart);
((struct nu_uart_var *) modinit->var)->obj = obj;
obj->serial.irq_handler = (uint32_t) handler; obj->serial.irq_handler = (uint32_t) handler;
obj->serial.irq_id = id; obj->serial.irq_id = id;
@ -335,6 +348,11 @@ void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
NVIC_SetVector(modinit->irq_n, (uint32_t) obj->serial.vec); NVIC_SetVector(modinit->irq_n, (uint32_t) obj->serial.vec);
NVIC_EnableIRQ(modinit->irq_n); NVIC_EnableIRQ(modinit->irq_n);
struct nu_uart_var *var = (struct nu_uart_var *) modinit->var;
// Multiple serial S/W objects for single UART H/W module possibly.
// Bind serial S/W object to UART H/W module as interrupt is enabled.
var->obj = obj;
switch (irq) { switch (irq) {
// NOTE: Setting inten_msk first to avoid race condition // NOTE: Setting inten_msk first to avoid race condition
case RxIrq: case RxIrq:
@ -634,7 +652,7 @@ int serial_irq_handler_asynch(serial_t *obj)
int event_rx = 0; int event_rx = 0;
int event_tx = 0; int event_tx = 0;
// Necessary for both interrup way and DMA way // Necessary for both interrupt way and DMA way
if (serial_is_irq_en(obj, RxIrq)) { if (serial_is_irq_en(obj, RxIrq)) {
event_rx = serial_rx_event_check(obj); event_rx = serial_rx_event_check(obj);
if (event_rx) { if (event_rx) {
@ -996,9 +1014,9 @@ static void serial_tx_enable_interrupt(serial_t *obj, uint32_t handler, uint8_t
MBED_ASSERT(modinit->modname == obj->serial.uart); MBED_ASSERT(modinit->modname == obj->serial.uart);
// Necessary for both interrupt way and DMA way // Necessary for both interrupt way and DMA way
((struct nu_uart_var *) modinit->var)->obj = obj; struct nu_uart_var *var = (struct nu_uart_var *) modinit->var;
// With our own async vector, tx/rx handlers can be different. // With our own async vector, tx/rx handlers can be different.
obj->serial.vec = ((struct nu_uart_var *) modinit->var)->vec_async; obj->serial.vec = var->vec_async;
obj->serial.irq_handler_tx_async = (void (*)(void)) handler; obj->serial.irq_handler_tx_async = (void (*)(void)) handler;
serial_irq_set(obj, TxIrq, enable); serial_irq_set(obj, TxIrq, enable);
} }
@ -1010,9 +1028,9 @@ static void serial_rx_enable_interrupt(serial_t *obj, uint32_t handler, uint8_t
MBED_ASSERT(modinit->modname == obj->serial.uart); MBED_ASSERT(modinit->modname == obj->serial.uart);
// Necessary for both interrupt way and DMA way // Necessary for both interrupt way and DMA way
((struct nu_uart_var *) modinit->var)->obj = obj; struct nu_uart_var *var = (struct nu_uart_var *) modinit->var;
// With our own async vector, tx/rx handlers can be different. // With our own async vector, tx/rx handlers can be different.
obj->serial.vec = ((struct nu_uart_var *) modinit->var)->vec_async; obj->serial.vec = var->vec_async;
obj->serial.irq_handler_rx_async = (void (*) (void)) handler; obj->serial.irq_handler_rx_async = (void (*) (void)) handler;
serial_irq_set(obj, RxIrq, enable); serial_irq_set(obj, RxIrq, enable);
} }

68
targets/TARGET_NUVOTON/TARGET_NUC472/serial_api.c
View File

@ -31,6 +31,7 @@
#endif #endif
struct nu_uart_var { struct nu_uart_var {
uint32_t ref_cnt; // Reference count of the H/W module
serial_t * obj; serial_t * obj;
uint32_t fifo_size_tx; uint32_t fifo_size_tx;
uint32_t fifo_size_rx; uint32_t fifo_size_rx;
@ -84,6 +85,7 @@ static int serial_is_irq_en(serial_t *obj, SerialIrq irq);
#endif #endif
static struct nu_uart_var uart0_var = { static struct nu_uart_var uart0_var = {
.ref_cnt = 0,
.obj = NULL, .obj = NULL,
.fifo_size_tx = 64, .fifo_size_tx = 64,
.fifo_size_rx = 64, .fifo_size_rx = 64,
@ -95,6 +97,7 @@ static struct nu_uart_var uart0_var = {
#endif #endif
}; };
static struct nu_uart_var uart1_var = { static struct nu_uart_var uart1_var = {
.ref_cnt = 0,
.obj = NULL, .obj = NULL,
.fifo_size_tx = 16, .fifo_size_tx = 16,
.fifo_size_rx = 16, .fifo_size_rx = 16,
@ -106,6 +109,7 @@ static struct nu_uart_var uart1_var = {
#endif #endif
}; };
static struct nu_uart_var uart2_var = { static struct nu_uart_var uart2_var = {
.ref_cnt = 0,
.obj = NULL, .obj = NULL,
.fifo_size_tx = 16, .fifo_size_tx = 16,
.fifo_size_rx = 16, .fifo_size_rx = 16,
@ -117,6 +121,7 @@ static struct nu_uart_var uart2_var = {
#endif #endif
}; };
static struct nu_uart_var uart3_var = { static struct nu_uart_var uart3_var = {
.ref_cnt = 0,
.obj = NULL, .obj = NULL,
.fifo_size_tx = 16, .fifo_size_tx = 16,
.fifo_size_rx = 16, .fifo_size_rx = 16,
@ -128,6 +133,7 @@ static struct nu_uart_var uart3_var = {
#endif #endif
}; };
static struct nu_uart_var uart4_var = { static struct nu_uart_var uart4_var = {
.ref_cnt = 0,
.obj = NULL, .obj = NULL,
.fifo_size_tx = 16, .fifo_size_tx = 16,
.fifo_size_rx = 16, .fifo_size_rx = 16,
@ -139,6 +145,7 @@ static struct nu_uart_var uart4_var = {
#endif #endif
}; };
static struct nu_uart_var uart5_var = { static struct nu_uart_var uart5_var = {
.ref_cnt = 0,
.obj = NULL, .obj = NULL,
.fifo_size_tx = 16, .fifo_size_tx = 16,
.fifo_size_rx = 16, .fifo_size_rx = 16,
@ -170,7 +177,7 @@ extern void mbed_sdk_init(void);
void serial_init(serial_t *obj, PinName tx, PinName rx) void serial_init(serial_t *obj, PinName tx, PinName rx)
{ {
// NOTE: serial_init() gets called from _sys_open() timing of which is before main()/mbed_sdk_init(). // NOTE: With armcc, serial_init() gets called from _sys_open() timing of which is before main()/mbed_sdk_init().
mbed_sdk_init(); mbed_sdk_init();
// Determine which UART_x the pins are used for // Determine which UART_x the pins are used for
@ -184,6 +191,9 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
MBED_ASSERT(modinit != NULL); MBED_ASSERT(modinit != NULL);
MBED_ASSERT(modinit->modname == obj->serial.uart); MBED_ASSERT(modinit->modname == obj->serial.uart);
struct nu_uart_var *var = (struct nu_uart_var *) modinit->var;
if (! var->ref_cnt) {
// Reset this module // Reset this module
SYS_ResetModule(modinit->rsetidx); SYS_ResetModule(modinit->rsetidx);
@ -194,22 +204,18 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
pinmap_pinout(tx, PinMap_UART_TX); pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX); pinmap_pinout(rx, PinMap_UART_RX);
// FIXME: Why PullUp?
//if (tx != NC) {
// pin_mode(tx, PullUp);
//}
//if (rx != NC) {
// pin_mode(rx, PullUp);
//}
obj->serial.pin_tx = tx; obj->serial.pin_tx = tx;
obj->serial.pin_rx = rx; obj->serial.pin_rx = rx;
}
var->ref_cnt ++;
// Configure the UART module and set its baudrate // Configure the UART module and set its baudrate
serial_baud(obj, 9600); serial_baud(obj, 9600);
// Configure data bits, parity, and stop bits // Configure data bits, parity, and stop bits
serial_format(obj, 8, ParityNone, 1); serial_format(obj, 8, ParityNone, 1);
obj->serial.vec = ((struct nu_uart_var *) modinit->var)->vec; obj->serial.vec = var->vec;
#if DEVICE_SERIAL_ASYNCH #if DEVICE_SERIAL_ASYNCH
obj->serial.dma_usage_tx = DMA_USAGE_NEVER; obj->serial.dma_usage_tx = DMA_USAGE_NEVER;
@ -220,19 +226,28 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
#endif #endif
// For stdio management // For stdio management
if (obj == &stdio_uart) { if (obj->serial.uart == STDIO_UART) {
stdio_uart_inited = 1; stdio_uart_inited = 1;
/* NOTE: Not required anymore because stdio_uart will be manually initialized in mbed-drivers/source/retarget.cpp from mbed beta */ memcpy(&stdio_uart, obj, sizeof(serial_t));
//memcpy(&stdio_uart, obj, sizeof(serial_t));
} }
if (var->ref_cnt) {
// Mark this module to be inited. // Mark this module to be inited.
int i = modinit - uart_modinit_tab; int i = modinit - uart_modinit_tab;
uart_modinit_mask |= 1 << i; uart_modinit_mask |= 1 << i;
}
} }
void serial_free(serial_t *obj) void serial_free(serial_t *obj)
{ {
const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab);
MBED_ASSERT(modinit != NULL);
MBED_ASSERT(modinit->modname == obj->serial.uart);
struct nu_uart_var *var = (struct nu_uart_var *) modinit->var;
var->ref_cnt --;
if (! var->ref_cnt) {
#if DEVICE_SERIAL_ASYNCH #if DEVICE_SERIAL_ASYNCH
if (obj->serial.dma_chn_id_tx != DMA_ERROR_OUT_OF_CHANNELS) { if (obj->serial.dma_chn_id_tx != DMA_ERROR_OUT_OF_CHANNELS) {
dma_channel_free(obj->serial.dma_chn_id_tx); dma_channel_free(obj->serial.dma_chn_id_tx);
@ -246,25 +261,26 @@ void serial_free(serial_t *obj)
UART_Close((UART_T *) NU_MODBASE(obj->serial.uart)); UART_Close((UART_T *) NU_MODBASE(obj->serial.uart));
const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab);
MBED_ASSERT(modinit != NULL);
MBED_ASSERT(modinit->modname == obj->serial.uart);
UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), (UART_INTEN_RDAIEN_Msk | UART_INTEN_THREIEN_Msk | UART_INTEN_RXTOIEN_Msk)); UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), (UART_INTEN_RDAIEN_Msk | UART_INTEN_THREIEN_Msk | UART_INTEN_RXTOIEN_Msk));
NVIC_DisableIRQ(modinit->irq_n); NVIC_DisableIRQ(modinit->irq_n);
// Disable IP clock // Disable IP clock
CLK_DisableModuleClock(modinit->clkidx); CLK_DisableModuleClock(modinit->clkidx);
}
((struct nu_uart_var *) modinit->var)->obj = NULL; if (var->obj == obj) {
var->obj = NULL;
}
if (obj == &stdio_uart) { if (obj->serial.uart == STDIO_UART) {
stdio_uart_inited = 0; stdio_uart_inited = 0;
} }
if (! var->ref_cnt) {
// Mark this module to be deinited. // Mark this module to be deinited.
int i = modinit - uart_modinit_tab; int i = modinit - uart_modinit_tab;
uart_modinit_mask &= ~(1 << i); uart_modinit_mask &= ~(1 << i);
}
} }
void serial_baud(serial_t *obj, int baudrate) { void serial_baud(serial_t *obj, int baudrate) {
@ -345,7 +361,6 @@ void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
MBED_ASSERT(modinit != NULL); MBED_ASSERT(modinit != NULL);
MBED_ASSERT(modinit->modname == obj->serial.uart); MBED_ASSERT(modinit->modname == obj->serial.uart);
((struct nu_uart_var *) modinit->var)->obj = obj;
obj->serial.irq_handler = (uint32_t) handler; obj->serial.irq_handler = (uint32_t) handler;
obj->serial.irq_id = id; obj->serial.irq_id = id;
@ -363,6 +378,11 @@ void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
NVIC_SetVector(modinit->irq_n, (uint32_t) obj->serial.vec); NVIC_SetVector(modinit->irq_n, (uint32_t) obj->serial.vec);
NVIC_EnableIRQ(modinit->irq_n); NVIC_EnableIRQ(modinit->irq_n);
struct nu_uart_var *var = (struct nu_uart_var *) modinit->var;
// Multiple serial S/W objects for single UART H/W module possibly.
// Bind serial S/W object to UART H/W module as interrupt is enabled.
var->obj = obj;
switch (irq) { switch (irq) {
// NOTE: Setting inten_msk first to avoid race condition // NOTE: Setting inten_msk first to avoid race condition
case RxIrq: case RxIrq:
@ -668,7 +688,7 @@ int serial_irq_handler_asynch(serial_t *obj)
int event_rx = 0; int event_rx = 0;
int event_tx = 0; int event_tx = 0;
// Necessary for both interrup way and DMA way // Necessary for both interrupt way and DMA way
if (serial_is_irq_en(obj, RxIrq)) { if (serial_is_irq_en(obj, RxIrq)) {
event_rx = serial_rx_event_check(obj); event_rx = serial_rx_event_check(obj);
if (event_rx) { if (event_rx) {
@ -1040,9 +1060,9 @@ static void serial_tx_enable_interrupt(serial_t *obj, uint32_t handler, uint8_t
MBED_ASSERT(modinit->modname == obj->serial.uart); MBED_ASSERT(modinit->modname == obj->serial.uart);
// Necessary for both interrupt way and DMA way // Necessary for both interrupt way and DMA way
((struct nu_uart_var *) modinit->var)->obj = obj; struct nu_uart_var *var = (struct nu_uart_var *) modinit->var;
// With our own async vector, tx/rx handlers can be different. // With our own async vector, tx/rx handlers can be different.
obj->serial.vec = ((struct nu_uart_var *) modinit->var)->vec_async; obj->serial.vec = var->vec_async;
obj->serial.irq_handler_tx_async = (void (*)(void)) handler; obj->serial.irq_handler_tx_async = (void (*)(void)) handler;
serial_irq_set(obj, TxIrq, enable); serial_irq_set(obj, TxIrq, enable);
} }
@ -1054,9 +1074,9 @@ static void serial_rx_enable_interrupt(serial_t *obj, uint32_t handler, uint8_t
MBED_ASSERT(modinit->modname == obj->serial.uart); MBED_ASSERT(modinit->modname == obj->serial.uart);
// Necessary for both interrupt way and DMA way // Necessary for both interrupt way and DMA way
((struct nu_uart_var *) modinit->var)->obj = obj; struct nu_uart_var *var = (struct nu_uart_var *) modinit->var;
// With our own async vector, tx/rx handlers can be different. // With our own async vector, tx/rx handlers can be different.
obj->serial.vec = ((struct nu_uart_var *) modinit->var)->vec_async; obj->serial.vec = var->vec_async;
obj->serial.irq_handler_rx_async = (void (*) (void)) handler; obj->serial.irq_handler_rx_async = (void (*) (void)) handler;
serial_irq_set(obj, RxIrq, enable); serial_irq_set(obj, RxIrq, enable);
} }