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Merge branch 'master' of git://git.devl.org/git/malvira/libmc1322x into uart-upstream

Browse source 
Conflicts:
	cpu/mc1322x/lib/include/uart.h
	cpu/mc1322x/src/default_lowlevel.c
This commit is contained in:
Mariano Alvira 2011-07-08 19:21:15 -04:00
commit e2d74fa0a5
15 changed files with 367 additions and 25 deletions
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46
cpu/mc1322x/src/default_lowlevel.c
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@ -45,16 +45,17 @@ void default_vreg_init(void) {
*CRM_VREG_CNTL = 0x00000ff8; /* start the regulators */
}
void uart1_init(uint16_t inc, uint16_t mod, uint8_t samp) {
/* UART must be disabled to set the baudrate */
*UART1_UCON = 0;
*UART1_UBRCNT = ( inc << 16 ) | mod;
void uart1_init(volatile uint16_t inc, volatile uint16_t mod, volatile uint8_t samp) {
/* UART must be disabled to set the baudrate */
UART1->CON = 0;
UART1->BR = ( inc << 16 ) | mod;
/* TX and CTS as outputs */
GPIO->PAD_DIR_SET.GPIO_14 = 1;
GPIO->PAD_DIR_SET.GPIO_16 = 1;
/* RX and RTS as inputs */
GPIO->PAD_DIR_RESET.GPIO_15 = 1;
GPIO->PAD_DIR_RESET.GPIO_17 = 1;
@ -79,7 +80,7 @@ void uart1_init(uint16_t inc, uint16_t mod, uint8_t samp) {
if(samp == UCON_SAMP_16X)
set_bit(*UART1_UCON,UCON_SAMP);
/* set GPIO15-14 to UART (UART1 TX and RX)*/
/* set GPIO15-14 to UART (UART1 TX and RX)*/
GPIO->FUNC_SEL.GPIO_14 = 1;
GPIO->FUNC_SEL.GPIO_15 = 1;
@ -90,3 +91,34 @@ void uart1_init(uint16_t inc, uint16_t mod, uint8_t samp) {
/* enable UART1 interrupts in the interrupt controller */
enable_irq(UART1);
}
void uart2_init(volatile uint16_t inc, volatile uint16_t mod, volatile uint8_t samp) {
/* UART must be disabled to set the baudrate */
UART2->CON = 0;
UART2->BR = ( inc << 16 ) | mod;
/* see Section 11.5.1.2 Alternate Modes */
/* you must enable the peripheral first BEFORE setting the function in GPIO_FUNC_SEL */
/* From the datasheet: "The peripheral function will control operation of the pad IF */
/* THE PERIPHERAL IS ENABLED. Can override with U2_ENABLE_DEFAULT. */
UART2->CON = (1 << 0) | (1 << 1); /* enable receive, transmit */
if(samp == UCON_SAMP_16X)
set_bit(*UART2_UCON, samp);
/* set GPIO18-19 to UART (UART2 TX and RX)*/
GPIO->FUNC_SEL.GPIO_18 = 1;
GPIO->FUNC_SEL.GPIO_19 = 1;
/* interrupt when there are this number or more bytes free in the TX buffer*/
UART2->TXCON = 16;
UART2->RXCON = 16;
u2_head = 0; u2_tail = 0;
/* tx and rx interrupts are enabled in the UART by default */
/* see status register bits 13 and 14 */
/* enable UART2 interrupts in the interrupt controller */
enable_irq(UART2);
}